I can get rebuild parts, too bad you are not closer to me, I would build it for you
Pumps can be had for not a lot of cash, sometimes the pump can be repaired, If you were to do a step by step pic expose I could tell you what to do, or you could call me, I can walk you through it
these are not complicated transmissions, as long as you go slow and take your time, doublecheck everything
My first 50 transmissions i did, I took pics of them coming apart just to be sure i got them all back together correctly, pay special attention to the clearances on the drums, and the drum seals, this is where most problems occur
Check the valve body to be sure no valves are sticking, this can be done with a small screwdriver
You can do this grasshopper