WOW. After tearing the the valve body and separator plate out.
I drilled a few holes bigger, changed some springs, changed a spool valve, added a relief valve, added another spring, and a circuit board in the oil pan.

It worked! No more shudder and excellant, tighter, quicker, shifts.

Now instead of the engine kicking from 4th to 2nd it drops into 3rd on the way to second.

I'm stoked!