Does anyone have a couple of Model mechanics 1/2 trunions laying around or know where I can buy a couple of new replacements? Had a slight depth perception problem and my Roo ended up on the sand instead of blacktop. Kind of puts a strain on the gear to go from 35mph to stop in 2 feet. Both mains said "no way". Can Robart trunions be made to fit, they look very close.