I haven't checked the pressures. I probably need to get a service manual before I go much further, because I don't know how to do that. I am a decent mechanic, and I've changed mast seals and rebuilt the top end on another lift, but I may be in over my head on the transmission. I can try draining the oil though. Also, one other symptom: the inching pedal works, but it seems like it isn't engaging fully. If I rev the unit with the pedal depressed it will overcome the brake and move forward. Thanks for your help!