I have all the linkage off and still won't shift by hand. Its stuck. Please email me [email protected]

Hi,
Your problem is in the shifter detent ball inside the transmission. They have gotten moisture contaminated and rusted and stuck. There are two screws in the top of the transaxle that get to them; they are lock-tited so it will take heating with a propane torch to loosen the Locktite and remove them. If you gave numbers, I would look them up for you.
Peace,
Clarke