Was the reverse tab that goes on the stud on the trans bent when the trans fell? Did you remove any of the linkage when you pulled it out of the car? What kind of trans is this? You mentioned that it was in a "kit car" and didn't know if it was an A-833, muncie, toploader ect.... When I first got the correct shifter/shift linkage setup in my Cuda, it was hard to put it in reverse. The more I drove the car, the easier it got.