[ratmonkey]

Here is a suggestion that someone may want to try. try installing plastic rivets on the slide plates you guys are making. If you look at most seat belts they have a plastic rivet on the belt to keep it from sliding thru. if you want to know what I am talking about. you can buy these in all shapes, sizes, thicknesses, lengths etc. They are easy to install and dont easily come apart. then the plates would conceivably act like the nubs on a roller puck. Less surface contact=less resistance. You could experiment with which shape and patern works the best.