How To Prevent Guitar Tuning Troubles

PRS Tuning Stability

There are few things more frustrating than a guitar that constantly falls out of tune, and as a company we know this! We want you to spend more time rocking than tuning, so we go to great lengths in our factory to make sure you get a stable and reliable instrument. However, once the guitar is yours, there are a few best practices you’ll need to abide by to keep your guitar playing in tune for all its days.


Below, we consult PRS service tech Len Johnson whose 45+ years of guitar experience has helped serve some of PRS’ biggest artists including Carlos Santana, John McLaughlin, and Neal Schon (Journey). Len has worked at PRS for 17 years, helping to launch PRS' own tech center, known has the PTC. He has experienced the common perils that plague out-of-tune instruments and shares his insights with us below!

#1. Stretch Your Strings!


Len mentions, “In PTC, the most common problem we run into are strings that were never properly stretched. New strings require at least a few minutes of breaking in before they achieve the ability to hold the desired tension, seat properly in the nut, tuners, and the ball end.” 

This applies to guitars with any type of bridge! Tremolo, stoptail, and even Floyd-Rose equipped guitars need their strings stretched. The stretching should be done with the guitar tuned to pitch, gently pulling the strings away from the guitar, using 4 fingers to spread out the pressure.

Starting near the pickup end of the fingerboard, lift the string about ½” and slide your fingers slowly toward the nut while lightly pulling the string, then reverse the motion. You can also pull the strings side-to-side as seen below. Do this several times.

Note: If you go too fast, the friction will burn you, and if you pull too hard you’ll break your strings. Some guitar techs spend 10 – 20 minutes playing the guitar and stretching the strings before the guitar is ready for prime time.

The quality of the string is also very important. Len says, “Sometimes we’ll see strings with a kink or have a slight bend to them right out of the package. Frequently, these types of strings never completely straighten out, even tuned to pitch. This results in the string buzzing on the frets where the kink is. We have gotten requests for a fret level, when the real culprit was bad strings.”

Finally, pay attention to your string gauge, an ultra-light gauge (.008” - .038”) may have a longer break-in period. On the other hand, thicker gauges might require a bit less stretching.


#2. String Size Matters!


Say you bought a guitar that came from the factory with .09’s and one day you decide you’d like to try an .11 set instead. Len says, “Unfortunately, using larger string gauges than the guitar was set up for will frequently lead to the string binding up at the nut. This will require the nut to be re-cut in order to open the slot. It can also require a truss rod adjustment.” 

While one gauge up may not have a detectable difference, be careful when increasing by two gauges or more. For this, Len has a method for checking how the string is seated in the nut.

Pinch the string on either side of the nut, and pull it up out of the nut slot, if you hear any popping or feel any resistance, the nut may need to be re-cut to open the slot.

Also, changing string gauges in either direction almost always means adjusting the intonation.


#3. When Re-Stringing, Learn To "Lock" Your Strings


This technique will vary based on the type of tuners you use (i.e. locking tuners vs non-locking tuners), but click here for a step-by-step process.

Ultimately, the more "locked-in" the string is at the tuning peg, the less the string will move and cause you to fall out of tune.


#4. Inspect Your Bridge and Pickup Height 


If you're still having tuning issues, you are probably experiencing a rare case where your bridge or pickup height is having a negative impact on your tuning stability.

In the bridge, intonation screws can work themselves loose over time and it may take a trained-eye to diagnose the issue. 

PIckup height can only have an effect if the pickup is too high causing the magnet in the pickup to slightly pull your string up and your notes out of tune while playing - and this type of issue typically has an effect only when playing above the 12th fret.


#5 Remember, Touch Matters


While this issue has less to do with the instrument itself, and more to do with the player, it's still important to note. If you're pressing your strings too hard with your fret hand, you could be pulling your notes and chords out of tune. This is especially true if you play an instrument with larger frets. Test your touch by switching on your tuner, fretting a chord, and plucking through the individual notes.


Happy strumming and remember that Len and the rest of the talented folks in the PTC are here for all of your set-up and guitar modification dreams!

Comments (23)

Paul Mathewson December 10, 2018 - 5:06pm
Please tell me what string gauge is recommended for the PRS SE Frederik Akesson. Thank you.
Rico August 23, 2018 - 11:25am
Proud owner of a new 2018 Custom 22 SE Hollowbody. Can you tell me what gauge strings come stock on it? Is a set of locking tuners available for it? Thanks!
Danny May 30, 2018 - 8:48am
I have the Custom 24 SE (2013) and tuning instability has always been an issue with this guitar. I'm convinced it's the nut. I don't use the tremelo, it's even blocked so it can't move. I changed the tuners to locking tuners. These changes helped some, but I still have instability. Lubricants haven't helped much either.
dennis campbell May 25, 2018 - 7:55pm
did the 90' s E g series have a painted signiture onit
Dave Annecharico March 16, 2018 - 7:52am
I just bought an SE Custom 24 and had my Luthier change to 11s and set up the guitar. I’ve had it re-set up 3 times now and still have tuning instability. Each time the nut was filed and lubed. How often does one have to file?
[email protected] July 31, 2017 - 12:48pm
Hey David, contact our customer service with this info, they can help you get everything to spec. You can reach them at .(JavaScript must be enabled to view this email address)
DAVID HOLDER July 30, 2017 - 8:32pm
Just purchased a new PRS CE24. In comparison to my other prs guitars, the tremolo bridge is high. the front of the bridge is 4/32 from the top of the guitar and the rear is 5/32 from the top of the guitar. My other guitars had the recommended 1/16 gap. Is this normal for the new CE model? thanks!
Jerry Thomason June 21, 2017 - 2:05am
I have a custom 24 10-top manufactured in December 2016 with factory locking tuners. In standard tuning, no problems. But when I want to change to an alternate tuning, it takes several fairly drastic retunings to get it there, or to get it back. Tonight, I needed open A. Tuned up the 3rd, 4th & 5th. Had to go back and retune the 6th which had gone high, and the 1st & 2nd which had gone low. Then had to go back and retune the 3-5 again. After about 3 rounds it was finally stable. A friend told me that will get better over time... Is that true?
[email protected] April 18, 2017 - 12:59pm
Hey Michael, contact our customer service! .(JavaScript must be enabled to view this email address)
Michael Wilson April 13, 2017 - 11:14pm
Original owner of 2016 CE24 and the low E tuner screw broke. Is there someway I can just get a replacement for the one tuner or will I have to buy a set?
[email protected] April 10, 2017 - 12:21pm
Hey Joe, it's unlikely that moving down one gauge is going to have any negative affect! Problems occur more often when moving up to thicker gauges.
Joe April 09, 2017 - 9:54am
Hi, I've just bought a new 2015 PRS CE24 which has 10 gauge strings. I use the 9s. Is it going to affect the intonation or action since this is a lighter gauge? Thanks, Joe.
[email protected] February 07, 2017 - 4:47pm
Hey Mark, our customer service folks can walk you through the specifics: .(JavaScript must be enabled to view this email address)
Mark February 06, 2017 - 4:24pm
I have a PRS Custom 2408 that I purchased that came with .010, the dealer installed .009 for me. This model has a Trem, once set up, I would like to tune to E Flat and Drop D. I think I may need a Truss rod adjustment at E Flat, do you have the measurements for string height, and also should this be achievable?
[email protected] January 13, 2017 - 10:56am
Hey Jenwei, the larger gauge string will change the feel of your instrument, but if you prefer a larger gauge simply make sure the string is not catching in the nut. Pull the string in and out of the nut and listen for any popping and feel if it is grabbing. If there is some resistance there, the nut will need to be filed to make room for the larger gauges!
Jenwei January 13, 2017 - 5:22am
Hi there, I'm thinking to change .12 set on my P24 in order to have a stable tune and a better sound from Piezo. What is your suggestion to me? Thanks in advance!
Hans Ruud December 30, 2016 - 3:27am
Looking for information on my 1989 PRS 10 Top the serial number is 0 8100 "10" stamped next to the serial number. What kind of pick ups are in it, I am the original owner, fyi.
Luis morales November 06, 2016 - 6:42pm
Len Johnson is the absolute Master of his craft. I have 3 PRS guitars, and he built one of them. I've seen him at his work bench one of the times I went to the PRS Factory, and it is an unforgettable experience to see someone with so much passion,talent, and expertise mastering his craft. He is a true Shaman, - Luis Morales
[email protected] October 31, 2016 - 2:09pm
Hey Freddie, it's Frost Green Metallic!
FreddieB October 30, 2016 - 8:52am
Useful tips for sure, but let's talk that CE. What gorgeous color is that? Magnificent!!
SAGAR October 27, 2016 - 5:35am
Man it really worked on my guitar with a vintage tremolo..Now it stays in tune for a very long time even after frequent use of it... Thank you PRS.. keep rocking.
[email protected] October 26, 2016 - 11:11am
Hey Michael, exactly, smaller frets would help out in addition to practicing a softer touch!
Michael Cooper October 25, 2016 - 10:02pm
I notice that my heavy touch sometimes makes me play sharp. Can having lower frets help? It seems like it would since there is less distance for the string to travel. Thanks!

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