I see we both came to the same conclusion Jim the best and easiest way to repair the dents on our frame rails was to cut the section out straighten it then weld it back into place. Its just to strong to pull it out and if you did weld a tab or something on and pull it out it wouldn't be very straight and flat so I think this is the best method. I'll be check out your progress, keep up the good work.
Danny
