Chances are the froward clutch plates are worn out along with the 3-4 clutch
plates, the govenor is what makes the trans shift govenor pressure overcomes
throttle pressure to shift the trans the detent cable at the throttle body controls the shift points.If you was to build this trans my suggestion would be
look up atsg (automatic trans service group) on the internet get a manual from them and read through it look at what tools you will need, as for a parts
I perfer raybestos clutches.