Hi,I;m responding to the transmission problem.My tranny does this also and the fluid is clean.Mine also shutters and shifts hard.I;d say get a used tranny and know the mileage and get new tranny kit & gaskets and fluid ,clean cover of pan and paint.Or if you want sometimes screens become cloged,may try a new kit and have bands adjusted.But i;d look around for a used one . rebuilt will cost a few hundred.call around or look online. Dave