Well. I've hit a major roadblock today. I pulled the column to do the seals, and realized that I forgot to order the pittman shaft seals, so all I have are the pittman arm cover o-rings and the ones for the steering valve.
Decided to also check down into the bell housing to figure out why the clutch drags, which makes shifting super annoying.
Noticed that when I pushed the clutch down, the main shaft didn't spin freely and the clutch disk didn't move on the splines. Simple fix I thought, maybe its just stuck on the splines, or it has a burr on the shaft or something.
Yeah, no. Turns out, when the engine was going on, the main clutch disk got caught on the splines and it immediately tore the hub out of the disc. I was unaware of this, of course, because I still had the column on and couldn't see the issue, which was also compounded by the fact that the PTO disk DID click onto the splines, which gave me a false sense of security, and also the engine fought me while getting it pulled, and went on about the same.
The reason the tractor still drove is because the center hub was jammed in at an angle and was bound up on the PTO shaft splines, meaning that the tractor was driving using the PTO clutch disk. You can actually see the 3 splines that were actually engaged on the larger shaft in the picture, and I sadly don't have a picture of the beat up splines on the other side and the ring of wear on the PTO shaft caused by the splines slipping.
Luckily, all the damage is localized to the main clutch disk and nothing else seems to be super badly damaged, though I will need to move the engine far enough forward to pull and assess the state of the pressure plate.