Good news today, I just picked up my rebuilt tranny. It wound up needing quite literally everything - all new gears, mainshaft, shift forks, shift plate, springs, etc. I went with all Andrews this time, including their "C" ratio gear set that raises 1st, 2nd, and 3rd gears so as to close the gap between 3rd and 4th.
Here is the carnage on the broken parts:
Ready for install:
