joyboy

Soloboss,

First off, thanks very much for the detailed response. That's pretty much gold for anybody with the shakes.

I stepped through your advice point for point and everything checked out perfectly. I ended up swapping out the upper blades *again* from a new package, and everything works perfectly again. A little bit of experimentation shows me that *any* pair of upper blades from this one pack create a terrible wobble. Pairing a single blade from that pack with another known good blade makes it wobble so bad that it almost falls over. I suspect that weighing them might end the story, but lacking a scale I'm opting for the garbage and calling it a bad pack. Didn't know that could happen.

In any case, thanks for all of the help.