It's been happening for a while now. Basically, it sounds like a 'loose' washer. I'm guessing it might be the clutch or basket case assembly...? When the bike is standing, moving, anything but off, you could hear it (almost like a mild metal to metal rubbing). I checked all the fluids and everything checks out OK. I'm going to run HP4M in the engine and switch to the HP Trans oil tonight to see if that solves anything.