Update... I was able to remove the bearing from the spur gear shaft and inspected the external shift unit clutches and everything looked ok. I am stumped as to what would cause this behavior!?!? I will disassemble the transmission next. The Genesis shifting and transmission units seem to be heavy duty, well built units, but I am trying to understand the engineering behind the doubled pinions/doubled spur gears. Since the pinions are fixed together and spin together, why not just have one pinion/spur at each shift unit?