We have prs alpha , we keep having a reacuring problem. I usally run it at about 5 inchs per sec. Lately the y carriage has been knocking itself off the x axis rails. It seems like one motor is running forward and the second isnt running at all or is running slower. the 2 small wheels in the front that carry the y carriage are always off track. We fix them by loosening the motors and it almost fixes itself, so i know that it is under preasure being pushed or forced off track. I need help because i dont know what is causing the problem.
Thx for any advice.
Keith