Hi, I was thinking of making my own frame straightening machine. Probably something that has about 20 ton pull. It would be moveable and made with probably 4 inch 3/8 steel square tubing. One pull post at the end of the main center beam. Grade 8 bolts,chains etc.Probably 5 -6 pieces of steel tubing would do it. Tired of long waits at shops plus I do most of my own work anyway. Anyone made their own machine. Mike