I'm making headway on the transmission rebuild. I watched a couple you tube video, thank Tom, this helped explain it but not in enough detail. Then I watched Greg's Logan rebuild. Thanks Tom, W again. So the one thing that perplexed me is that 3.5 inch long key. No easy way to get it in there. But there is. I used my new shaft on the left side, old shaft on the right side . I also knocked out the right side bushing. And you don't need to mark the key way positions on the gears. You build up the left shaft first, 16 tooth gear and the the 2 duplex gears. Then you install the gears and spacer on the right shaft. I had to do this several times. Not much wiggle room and a tight fit. I polished both sides of every gear and the spacer and then it went together. Then I used a brass hammer and gently taped the left shaft in and the right shaft out. Then I inserted the key. Oh, and in preparation I polished the key and the keyway to insure a good smooth fit. Mine had a few burrs. Anyway, you gently push that key in while turning each gear, when the key enters the gear that gear is locked onto the shaft. Kinda like a lock tumbler, 9 gears and a spacer. As I progressed with the key I tapped the left side of the shaft to allow more key to stick out on the right side. When the key was flush with the shaft I used a second key to push the main key into place. Sounds complicated but it's not at all. Once I was sure that the spacer had the key into it far enough I pushed the shaft to the left. Then I installed my bronze bushing using a bushing driver. Made some final adjustments and the tightened the allen head lock on the spacer.
Now I'm waiting for the new main drive shaft, Scott/Logan said by end of next week I should have it. This was a real head scratcher about that PITA key.