Case 580 ck stuck help needed(update and stumped)n

Sorry for posting a new thread but I am stumped. My wheels are completely locked up. Recap
1. Rebuilt clutch
2. Rebuilt engine
3. Started up after repairs and worked her digging fence posts. Everything good.
4. Go pull out a stump, all good running well
5. Go to reposition
1 shift from one to two
2. All stop like I hit something
3. Locked up won't move

So as I posted in previous thread I could put into neutral and roll, so I pushed myself with the hoe off to the side of the road. I just got back to machine and popped all the covers. I am not stuck in two gears at once. In fact all looks good and I can slide the gear selectors around and select gears and put into neutral by hand and see the gears spin. I pulled the top cover off the diff and drained oil. All looks good. No gears sheered or metal bits. In neutral everything spins correctly. Now when I engage a gear, instant lock. So I pulled the cover and drained the oil in the shuttle. While in gear and with a friend holding one tire and me shaking the other you can see that everything is trying to turn right up into clutch. Meaning shaft coming out of clutch into tranny gears is trying to turn but wont. I jiggle and can see it play and jiggle. I turn engine over with the choke on and see the clutches spinning. I can't however spin the clutches by hand at all. It seems that I have been able to spin one side of the clutch pack by hand and the other rotated in opposition. I can't spin them at all, but the thing in the middle of the clutches does spin when engine is running. It seems my issue is clutch or torque converter. Could that be. What would jam me up. When the engine turns I see the clutch spinning so that means the engine is spinning torque converter. In neutral ring and pinion spins fine and the tranny gears spin good. It seems it must be the clutch itself, not the packs but whatever the silver thing inside the clutch is. If anyone can help me out I am stumped. Going to pull clutch out next.
Recap
Wheels locked in any gear
Engine puts fine
Tranny gears appear good and can move gears into neutral and all drive gears by hand.
Ring and pinion look good. All gears present and accounted for spin correctly in neutral.
Clutch looks physically good and has correct pressure
- however(maybe a clue) I can't spin them by hand.
- when I turn engine the packs don't spin, but the silver thing in the middle does

I have pics and videos

Thank all of you. I am in a tight spot here, wife is looking at me not amused. I am in a tight time frame to get up again.

Could it be your brakes are hanging up? My 530 draft o matic somtimes
hang up lock up hit the brake cover with lead bammer , just a guess

You said that you changed all the oil? I remember reading this in my service manual some time back, I don’t know what kind of damage it would do if you did not do it like it states. Just food for thought.

Sorry for multiple posts here but I shot some video. I could only post pics here but I put it on you tube. The first is the gears being minipukated by hand and the pinion gear spinning. The longer one has the clutch housing open and I turn engine over. You can see clutch spinning.

https://youtu.be/Hu4-hcvSR2Y

https://youtu.be/M5xY-G7L76U

Any advise would be awesome. I will be eternally greateful if someone could point me in the right direction. The brakes are free I can spin tires in neutral forward by hand and engage and disengage them with the pedal. It takes a little ninja skill to do all that at once by one person
Adrian

Plenty of oil I can see it flowing through clutches, it's like the clutch is jammed. Everything was full of hightran. Both chambers and clutch pressure holds normal. It's like the clutch is jammed or the torque converter is jammed. Thanks for the advise though.
Adrian

Plenty of oil I can see it flowing through clutches, it's like the clutch is jammed. Everything was full of hightran. Both chambers and clutch pressure holds normal. It's like the clutch is jammed or the torque converter is jammed. Thanks for the advise though.
Adrian