My X3L is just over 2 years old. Recently, I've noticed that the Tap/Tuner switch is behaving erratically.  It doesn't always work when I press & hold for the tuner, and tapping in a tempo for my delay is problematic.  The problem occurs most often when my heel is resting on the floor.  If I pick up my entire foot and press the switch more on the switch's far edge (that's the edge farthest from me), it works better. 

Is my switch going bad?  I use that switch more than any other, so could I have worn it out?  Or is there a way to improve the function without replacing the switch? 

I live a few hours from the nearest authorized repair center.  Can I buy a switch from Line 6 and install it myself? 

Another question...Are all of the foot switches the same part?  If so, I could possibly swap parts and put this one in a spot I don't use very often.

Thanks...

Message was edited by: Sam Chambers The serial number is 21X3L1s5933009010.  So it appears to have been made after the switch design changed, and is not covered under warranty.