My 5th gear was slipping a little bit, not enough to come apart, but enough for me to split the case. There was absolutely no loose metal in the case. The gears all look good except for a little wear on the dogs shown below. The other problem is some rub marks on the shift fork. Is there enough wear on this gear to cause the 'slip?' How do I know if the wear on the fork is from a bent fork or something else? I'm thinking that as 5th gear popped out it pushed on the fork causing the wear.