Summary: try some lubricating contact cleaner before you replace the switches.   I've just had a good experience fixing non-functional footswitch buttons on my Pod HD 500X. There are plenty of posts and even Youtube videos about this, but I have a couple of additional tips that might help someone.   My FS1 and Bank Up footswitch buttons had gradually stopped stopped working. The design of these units is that the metal footswitch you press has a spring-loaded plunger that in t