I had the same issue. I tried putting electrical tape as a buffer, then candle wax, still kept having the problem. Ordered some new CTS concentric pots with new knobs (like stated above, the old knobs won't fit the CTS pots) and, not only have I yet to have the issue again, this bass has never sounded better. The turn motion is solid and silky smooth now, and I kick myself for not doing it sooner.
True, there are a fair amount of connections to make, but it really isn't that difficult or time consuming considering the end result of a great playing experience. As always, make a good diagram before you take things apart, because wiring schematics that actually match the factory setup are almost impossible to come by.
EDIT: I wouldn't modify anything outside of the factory knob/wiring setup. The stock pickups are not like typical p/j schemes; they don't play with alternate or more traditional wiring. I would just plan to replace both pot stacks and the input jack all at once. It's actually easier than trying to use a lot of the existing stuff, though I think I did reuse the wires and the caps. Again, having the quality pots and jack are a huge difference, and this bass is my fun-playing work horse again.
Eat all your veggies. And don't bang the dillies.
Last edited by jumblemind : 12-12-2012 at 01:49 PM.