Any other diagnosis?

The inspection plate with the cotter pin in it leaks fluid. It would seem that if the inspection plate leaked alot of fluid that would mean the rusted line was in between the plate and the pump manifold and wouldnt fill the transmission.

The lines visible by removing the inspection plate look perfect.

Another questions. Someone referred to removing the lift plate... is that the plate with 16 or so bolts that has the lift arms, lift lever, and seat attached?

Lastly, are there any major pitfalls associated with a front rear split ? Is it a simple as taking off the steps and anything else on the outside holding the front and rear togther and then supporting both halves and removing the connecting bolts? Will the output shaft from the tranmission just slide out of the rear section? How do the hydraulic lines disconnect?

Thanks