A904 front pump install problems 63 Dart GT

1. You can't install the pump with the trans standing on the output shaft (it pushes everything towards the pump)
The case should be suspended to let the output shaft settle in place.
2. If thrust washers were not greased in place they can fall out of place misaligning the locating tabs. (then they don't seat flat)
3. when dropping the drums in you should hear/feel a solid thunk when the shaft ends meet.
4. Put the front drum on the direct drum first and drop them both in at the same time while twisting the input shaft back and forth to engage all the clutch splines to the planetary ring gear.

Just some things to watch for.