8 3/4 questions

If it does check high it could be the governor weight spring broke but it's most likely just stuck. Doesn't take much to jam a little valve like that. If that's the case, before you take it anywhere you might try adding a can of K&W Trans-X to it and drive it around a while and see if the Trans-x frees it up. I've had that stuff work miracles in a couple transmissions.