So I committed the cardinal sin while taking out the transmission by not wiring the main shaft. Yep - clink, clink and all the needle bearings fell out. I’ve always wanted to rebuild a T-90 so here we go. I have everything apart and the counter shaft and low/reverse gears look pretty worn out. Should I replace? FWIW before I took it out the transmission worked great. The only reason I was taking it out was to get at the clutch/flywheel.