Another thing to check is to make sure the manual valve is attatched correctly to the shifting mechanism. If it is out of place it won't line up correctly in the valve body to direct the fluid where it needs to go.

A pressure gauge would tell a lot if you had one. Did you replace the seals in each clutch pack? If so it is possible that it was cut while installing the piston in the drum. (Been there done that).

Good luck, let us know what you find.

Last edited by Roy Rodgers; 04/05/2009 1:49 PM.