Unfortunately we received a "lemon" mount (not your fault). The control box and Starlock were not functional; and the threads on the drive body were too tight. Bottom line is that Meade has replaced what I bought from you with a brand new LX850 German Equatorial Mount w/ Starlock. I will set it up later this week and return the "lemon" back to Meade. Please feel free to give me a call.