well I finely got the t20 tore down. the left side ring gear drum clutching teeth worn, shift thang worn, it seems that the inner plate was backwards. also found right side planetary drum down about 100 thousandths. back to the left side it did not have a washer between ring and inner plate. all bands are bad. can I find a good parts t20 or do I just bite the bullet on parts. I also could weld up that 1 drum and cut it back down but rather not.