I have an Ullman loom, 4 harness 4 treddle Jack loom. Ullman is out of business so I cannot get help from them. The cords going from threadles to harnesses go through holes, rather than pullies, and they were originally lined or topped with very smooth metal sorts of washers. Over the years these have gotten worn, have nicks, etc and cut into the cords, wearing them out rapidly. I have to replace them often. I have tried finding new washers .but they are not exact and they still wear and cut the cords. Does anyone else have this problem with ullmans and if so, how DoD you fix it?