I think I figured out one of the problems with the transmission and why the tractor doesn't move went selected in gear. 

The splined nut on the counter shaft that retains the bearing in front of  the 611 gear, the 625 collar, and the 1024 gear is loose. It is allowing the 611 gear to float at least .25&quot; (along with the 625 collar) to the point I can shift the 1041 coupling and push it off the 625 to where it is just on either 611 or 1024. If they aren't coupled to the 625 collar then they won't be coupled to the countershaft. 

I'm also missing a retainer that should have been in place on the 608 gear according to the book. I can see a groove on the forward face for one, but nothing was there. I was able to pop that right out. 

Now I'm at the point of how do I get the bevel pinion shaft out. That is the shaft that someone welded in to the bearing race. That needs to come apart to get the second gear off. It also needs to be taken apart so I can make the proper repair to be able to preload the shaft and bearings.
I have a smoke wrench, but my concern is getting into the cast with the flame if I try to cut that shaft. I may try a a cutoff tool first. 

I'm also wondering if anyone has a parts breakdown. I'm making a list of the obvious as I pull this apart, but I've already found one piece missing and I know I'm missing something (a nut for sure) where they welded it.

I'm going to have to find some spanner wrenches or make something as well.