Seems like "rubber banding", a term that seems to be used to describe the symptoms you describe , the problem appears to be corrected by calibrating and retraining the drives ....training the drives enables the Autostar to determine how much slack is in the gears and the ability to adjust for it when the slewing key is released. Update to the latest firmware as well.Thats unusal with the final centering speed , i thought the Lx90 would be identical to the LX200
