I've got a wee gripe. A bit hard to tell with the lack of pictures, but can we see the torque converter and the mating pump gear? It would be useful when you pick through the 722.3 to illustrate and compare the two assemblies to see how MB tried to fix the earlier weak 722.1 torque converter by making the ears wider ( and making the driven tabs smaller in the pump).
This is a common failure mode with these trannies as well as the reverse band adjustment backing out. Just think those common issues need some discussion....
Rick