Hey guys I am new to the site. I just purchased a 1962 Massey Ferguson 50. It needed some work to get it running. Once I got it home I got it running by priming the injector pump. Then I changed all the fluids and all the hoses. I ran it around the yard and fields. The multipower linkage was disconnected and it was in low. I took a pair of needle nose pliers and switched it to high. High worked for about 20 min then it shifted back to low on its own and stayed. The weep hole in the front of the transmission is leaking transmssion fluid. What could be causing the leak and can the multipower be fixed? Sorry for the long back story and thanks for your help.