Ron, the end of the long axis is just allowed to follow along on two rollers and is not driven or captured in any way. It just goes where the other end goes and is only kept in guide by the rollers at the driven end and the rigidity of the tube. It worked pretty well on the last table years ago and its axis was considerably longer than this one so I hope it will work even better this time. Thanks for the interest. I will attach a couple of pics of the end roller assy.