RE: Servo Chatter
Agreed with CGRetired. Try a different servo first. To answer you question, cleaning the pot will fix it if the problem is a dirty pot or corrosion on the brush. If it's a worn pot the only option is replacement though. I suppose if a guy were motivated enough to keep using that servo you could move the pot a little to get a fresh spot to be the center, but eventually the wear will get worse and you'll have a glitch every time you go the direction of the wear. I wouldn't risk that for a $35 servo.