While probably not lemon status yet, I would at least get the ball rolling on finding an attorney, don’t mention it to the dealer though. If you start getting the run around between your dealer and Ford and getting an adequate resolution, at least you've got a bit of a head start. I personally would be pushing for a transmission replacement at this point. I think it's clear they don't really know what the issue is, and I would not at all trust the workmanship of the service department to go digging inside the tranny for a rebuild.