This H wasn't jumping out of 5th at all, and had zero issues going into and staying in any other gears. I have a very generous donor who is sending brand new 4th/5th sliding gears as well as the 3rd/4th driven gear. These seem to be the worst ones in the gear set. Oh, and my pilot bearing - bad. Rollers fell out of it as soon as I took it out. They aren't cheap either, and only available through Case-IH.
I made a little bit of a mistake tonight (but from what I hear a LOT of people have made the same mistake). I attempted to pull the pinion/bearing cage and heard a loud BANG. After some investigating, I discovered that it is necessary to FIRST remove the bull gear and axle/axle housing in order to pull the pinion cages. Well, live and learn. A restoration wouldn't be a learning experience without a little self destruction, right? Oh well. Live and learn, as they say.
So, moving forward... All I have left to disassemble is the lower gearset, and the left side axle/pinion set. It's official. This is by far the FARTHEST I have ever been into a tractor. I have been intimidated by it in previous workings, but I have found that it is MUCH easier than I thought. It's actually really fun seeing how all these big parts work together. Putting up a video right now of the next stage of disassembly.. But here are a few photos (and one of the carnage).