Help identifying valvebody?

I'm betting he has a worn trans. If I were the OP I'd throw his spare VB in it, and see if there's any improvement. If there is, then there's a problem with the Turbo-Action valve body. If there's no improvement, then the trans is due for a rebuild and it's time to pull it out. But the kickdown is irrelevant in this case, because that's how the T-A #17156 is, meaning present and non-functional.