I just read this whole string and agree with that the best thing to do is buy Cat Trax. John thanks for the update on the old Cat Trax. I have two sets now and one set of the Euro Trax which I like because of the adjustability. I recognize that some people have to learn from experience so here is a link for some inexpensive wheels that might work well enough: http://www.ebay.com/itm/Dock-Boat-l...-Gate-Wheel-NEW-/330451540876#vi-content