I wasn't sure where to put this one so I put it under engines and here. Sorry!

I spent most of the day yesterday at Mike Troyers place I thought working out a few bugs with my tunes. Well come to find out the tunes are fine but the PCM is going nuts. I contacted my local Ford dealer to enquire about one to match mine with a Tear Tag Code of PWS2 only to find out that this one has been updated and is no longer available. They would have to order the PCM and physically have it in hand to know what the Tear Tag Code was. Even then a different Code means new tunes. Does anyone have any suggestions/ideas/sources. I sure hate to buy a new PCM have to wait for new tunes and then have Ford install the PCM with me there to load the new tunes. HELP!!