[rcheshire (Rowland)]

A few more inquiries tends to indicate a preference for R&P focusers for imaging. Although, Steeltrack Crayford's have a good wrap.

The friction screw seems to be part of the problem, pushing the draw tube out of alignment as well as a little lateral slop, even when the screw is tight. A stepper driven focus mechanism could lock the pinion in place without use of the friction screw.

The lateral slop, though small, may require either refurbishing the focuser and reducing clearances or the addition of some sort of compensating mechanism.

I guess the little Takker was not designed with heavy imaging equipment in mind.