Some progress today, I received my two shifter stop plates, and ground a little on the stops to increase travel. The downshift from 4th to 3rd gear works ok, but from 3rd to 2nd gear, it doesn't have enough 'throw' to get ito engage properly. I am thinking of grinding more on the downshift side of the shifter stop plate, and see if that will increase the travel of the shifter to get 2nd gear to engage. It just barely grinds on downshift. However, from 2nd gear to 1st, there is enough travel to get into 1st gear when downshifting.
Now, as to play in the bell crank, there is in and out play of around 3/16" or so, perhaps more, is this too much? And, if so, do the shims go inside the inner cover, between the bell crank and the inside of the inner cover, where the transmission reside? I believe this is what you meant... anyway, I have a couple of shifter stop plates to experiment with, so no great loss ($2.20 each) if I screw one up lol.