No movement of anything, although I dunno if you could wiggle anything if it did have a bad bearing. Something in the drive train, either the u-joint, or something's coming loose, output bearing? Sounds, and feels like when driving, an out of balance drive shaft in a car. (I had one once). A steady rumble type thing, that gets worse with speed. Pulling in the clutch and letting the engine go to idle, has no effect on it. We'll see what they say tomorrow. I'll post results for sure.