Hustler Fastrak tranny leak

I have a Hustler Fastrak 54" a couple years old, somehow something has hit one corner of my right side transmission and a small dent has been put into the alum case. Its right next to the point where the shift lever pin goes out of the alum case. The arm that actuates the lever rod is on the opposite side of the case. I have a drip drip of oil coming out at that point, I think maybe around the rod itself maybe because the impact damaged the housing and a seal is leaking. The parts list I have doesnt show the internal parts of the transmission just the external parts. Does anybody have a parts list for these trannys???? Im not sure if I can fix it without replacing the whole tranny but I would sure like to. Right now I have put liquid metal around the pin and hope that it will hold til winter and I can tear it down. Any ideas????