I've seen conflicting advice on how to address scratchy pots on amps and basses. Seems like some folks blast away with Deoxit 5, some use other products, some just use a drop of one cleaner or the other. Some say pull the knob and drip it around the shaft, some say find an opening on the back. And some advise against using any kind of cleaner at all because it will strip the lubricant off the internals of the pot. Mostly I've gotten by with just exercising the pot from limit to limit--but I know the time is gonna come when that doesn't clean up the skkkkkrrrrrrgggghh noise. So I could use some expert advice here, from folks who do this kind of maintenance professionally.