I am working on a Clark C50Bwith a Hydratork. Trans was very slow to engage in gear. Had to rev the engine to the moon for it to move forward or reverse. Once moving, lift was quicker to respond in gear. Replaced converter charging pump, drained oil pan, cleaned screen, installed new spin on trans filter & disconnected inching spool. Made sure parking brake was not dragging. Tires spin freely. Diff full of trans fluid. Disconnected gear selector linkage to make sure fully engaging in gear. Now lift doesn't move forward or reverse at all, no matter how high I rev the engine. What did I miss?