I beleive the problem was the stud didn't screw into the saddle far enough and could come out, although some also reported the thread in the aluminum knobs stripped out. My Skytee 2 has been fitted with a Synscan set-up and is a full EQ GOTO when the wedge I built is used. In Alt-Az mode it's just a powered mount (still very handy though) as the drive motors would need encoders to work as an Alt-Az GOTO. Skywatcher doesn't use encoders for the Synscan EQ. Skywatcher never intended to have drives