'93 D250 Cummins truck.
I've rebuilt the trans with:

-5 pinion planetary and corspondiing intermediate shaft,
-new steels+ clutches
-billet apply lever and servos ECT.
-TFOD-Hd2 valve body

Truck is in OD by 35mph. Rushes the 2-3 shift and won't hold second gear when "2" is selected. Going from "2" to "D" engages the OD. 1-2 shift feels good. Holds first gear pretty well depending on were I put the TV cable. Sometimes downshifts after I've come to a stop.

I was pushing my limited skill level rebuilding this thing. I'm flumuxed. Need some ideas of what to check. I'm working on getting a pressure gauge for the pressure ports to make sure I'm in the ballpark on that. Any help would be greatly appreciated.