Installing the front pump is kinda tricky. You may have broke a sealing ring and have it bound up. Or like mentioned above the front drum flopped down and clutches were not aligned when you tightened the pump and have it bound up.
It seemed like it went rather smoothly. I used two lengths of all thread as guides, and slid it in pretty easily. Some very light taps with a rubber mallet to seat it, then ran down the bolts and torqued to spec.
But as bad as it sounds to me, especially after already dropping in the motor, the pump is the only part of the transmission that received attention.
