Kahler tremolo systems, when setup properly, are notorious for staying in tune no matter how you abuse them. But heavy tremolo use and carpet bombing techniques can eventually wear down even the best metals. That is why ol’ faithful may not be so faithful anymore. It’s called metal fatigue. That’s where some tuning problems can be found, but not all are age related. Many have to do with improper setups....

Below are some common reasons you may be experiencing tuning issues:

You are using Ernie Ball strings. These strings get so many complaints of Flat/Sharp tuning issues i had to say something. DO NOT USE THEM. Remember tremolo strings take allot of abuse. The key word here is "TREMOLO STRINGS". Tremolo or reinforced strings have better build quality, pliability and response than others strings made for fixed bridges. They usually cost more too. Look at your string pack and see if it says " TREMOLO STRINGS" or "REINFORCED" Not all strings are meant for tremolos. And at the same time.., not all good tremolo strings will say " TREMOLO STRINGS" or "REINFORCED" on them either. I do not recommend Ernie Ball strings of any type. I have had so many complaints of EB's strings going out of tune (flat/sharp) that it was obvious something was wrong. This is from a customer I helped that was using EB's: " I switched to a set of DR .10's that I had laying around with four springs last night. Made a MASSIVE stability improvement immediately!" He is not the first to write me about this revelation.

Here is a short list of the strings I personally recommend for Kahler's: Roto Sound, Elixir, DR, SIT, and GHS Boomers. I am sure there are other brands out there I am unfamiliar with, so if you find a set that holds up well and you would recommend, please let me know. I feel it is worth the mention.

Metal fatigued return springs. How can you expect your tremolo to spring back to attention if its got weak return springs?  Springs are the least thought about, neglected parts, yet the most important part your tremolo needs to be its best. Replace them consistently every 3-5 years. The Normal Tension Return Springs are PN# 8412 and the Heavy Tension Springs are PN# 8413. The Fulcrum return springs are PN# 8414. Also you want to check to make sure the Spring Mounting Screws PN# 8392 are snug and tight. If they slip it won't return to center. When the saddles are set too high or the rollers are dirty, you wont be able to stay in tune properly. Symptom: when you pull back and return, your strings go flat. Consequently when you dive bomb, your strings come back sharp. It is very frustrating. This is a dragging issue. Something is dragging.If the rollers dont spin freely when spun by hand they need cleaning. see Video. However if this is a new Bridge or tremolo install, then you should mainly look at the roller height for the problem. See Video. The little allen behind the roller is a saddle height adjuster. It is used to adjust your radius NOT the saddle height. In retrospect they should be called "radiusing adjusters". Many times they are used improperly to adjust the string height to accomodate lower/higher fretboard actions. This is wrong. To understand all this simply.. just remember this: The stronger the stringbend is over roller because of the saddle height, the more weight that is exponentially applied to the axle pin of the roller, thus causing drag. Drag times six strings worth. All Kahler tremolo and fixed bridges are designed to work when the saddles are at the lowest position (about 9:15 to 9:30 oclock) but yet high enough to not cause buzzing from the string being to loose over the top of the string rollers. If your tremolo does not return to center ONLY after a pull up on the arm, then you might want to inspect the string lock to make sure one or more strings are slipping through the clamp plate. The strings eventually create a worn out channel in the clamp plate. If this happens it will change the tension over the entire cam and it wont center out correctly. Inspect them and replace if necessary. This problem is most noticeable on string bends and then you have to dive all the way to return it to pitch. Also the nut must be fluted and lubricated with graphite. This prevents the string windings from chinking back and forth over the nut during tremolo operation and creates a smooth slippery slot for the string to slide on. Graphite nuts work great but still lube them. Another good idea is to put a 45 degree bend in the wrapped windings next to the ball end. This prevents the string from spinning in the string hook, and reseating due to string slack during deep dives.