727 shifting issues

Humm... Kinda sounds like he screwed up something in the valve body. If you completely unhook the Lokar cable will it shift any sooner or does it still rap out tight before it shifts? If you haven't tried that do it but just for a test cause running with the Lokar cable unhooked very long can damage the trans. If it still won't shift sooner my guess is he something put together wrong in the throttle pressure valve section of the valve body.