ORIGINAL: futura
....That sounds like a bent spendle...but I'm sure you checked that. Loose blade grips (not seated well enough on the spendle) can cause that and also blades to loose in the grips. I'm talking about the tracking changing at a constant head speed with no input....that is what you said you were experiencing right?
That's precisely what I'm seeing yes...
The spindle's probably a good candidate and in my frustration, I realized I didn't give it as thorough a look as I should have...I'll be sure to check on the next tear down...
Is there anything I can do to get the grips seated better on the spindle?
the M2 bolts are about as tight as they can go at this point...