Hi Les,
Nothing is seriously wrong with Andy's TOA. The objective appears to have a bit of a tilt and that prevents the flattener/corrector to work properly.
The rest of the problems were not from Tak hardware. The field rotator could not be locked in a way that would guarantee squareness and the focuser had a bit of a tilt too. Focuser tilt can be adjusted but only in one plane, which is not enough to get it perfect.
Other than that, he inherited a bunch of adaptors/extenders with wedge errors.
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