[YoungPup1977]

How did the forward clutch pressure test on the bench thru the pump. Did you replace the pump and stator ? With a lot of metal in a 350 most always takes out the pump and stator. Maybe you broke the sealing rings for the forward drum when installing the pump/stator into the case. After you got it warmed up on your 35 mile journey it started to lose pressure in the forward drum/stator area. Maybe you tore a lip seal in the forward drum (that’s why I asked how it pressure tested on the bench thru pump Most likely if it’s slipping there are no adjustments to be made externally Pull it back out I am guessing. Good luck. Oh one more thing. How is reverse ?
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