Haven't seen one of these in a while. The usual problem, fork shaft popped out of the bushing that is housed in the stamped tab on the front wall of the case. Then the washers fell out (luckily weren't lost) and it flung itself into reverse. I ended up getting it back together and bent the tab forward slightly so there was no axial play in the shaft. Too bad it happened during the snow/rain and I have 1 wheel drive pickup. What a poor design. Going to weld a gusset in there after the season is over, unless he calls me and says it happened again. I told him to wiggle the shaft in and out. If any play, call me.