Rep Power: 0

Ok kind people,allthough i am a 30 year,vetren operating repair and restoration shop sadly when i began u could buy tranmissions for nex to nuthin from japan at a outlet store in dallas ,so i knever learned how to repair transmissions lol ok i have replaced at least 50 automatics in most every generation,heres how they go ,when there cold they shift perfect after warming up ,they eventually totally quit pullin ,is it the inner filter r somethin to do with the exspansion of the metal once it begins to warm up,what internal part goes out on theses closedcase trannys? what is the cure?