[paulicat]

Well, I got it back, and so far so good.
Here's the scoop:
Of the 3 guide pins, 1 was in place, 1 was broken badly caused a breakage in the flywheel, the third one was missing altogether :o.
Wtf happened to it...they don't know. They can't say if it wasn't there from the factory, but that seems most likely to me.
Overall, it feels smoother, as if there was a vibration there all along. I dunno, could be placebo effect.

Thanks for everyone's help...now I'm off to start another thread about the potential of getting some horsepower out of this thing!

Paulicat