While waiting - almost patiently (2+ ft of snow this weekend - so far has help!!:flipoff2: ) - for the shims for my idler cluster to come in from the Toyota dealership, I messed around with the top covers. I wanted to disassemble them and combine some parts. The shift forks on the older SM420 were in better shape than the newer SM420, but the shift plate in the older tranny is plastic, while the newer is steel. Once I got them apart - dremeled the pins on the shafts and drove them out with the same dia. screwdriver, I was glad I decided to tear them apart! That old shift plate is definitely worn!!! Not sure if would make it difference in shifting, but...