[Jim Cimarolli]

I have seen this happen a few times. Most people only put one or two reverse frictions in a footbrake transmission like yours. When you tear it down I think you will find the reverse clutches welded to the plates and all the lugs knocked off the clutches. We all know a person is not going to burn up reverse backing out of a pit area. However, if you often shift it into neutral after the run and your shifter is a bit out of adjustment that's how this happens.