The shifter on my H55F seems to have more play than it should when in gear, so I looked at some parts diagrams and found a factory shifter seat (33505-60020) and a shifter bushing (33548-60020). My shifter seat apears new (ish) so I don't suspect that's the culprit, but I noticed on my shifter that there is no bushing on the end. Fortunately no sign of actual wear on the ball, but still, no shifter bushing. It's too bad Marlin Crawler doesn't offer their HD shifter seats and bushings for H55F trannies. Ah well. New OEM on the way from Partsouq....