Quote Originally Posted by Clive S View Post
If the pulleys are tight and not slipping are you sure you have the same pitch on the all the screws?
hi glive just checked and pitch 5 mm on all using calipers, yes checked pulleys, only thing I can think is when I put 2 side by side with the start fron,t thread is high to other match line of thread and the start is quarter way round, I have tried every position but still none match when travel stops, thanks again kev