In Los Angeles:

You might want to see if Galen Bieker at Werks II Motorsport can help you.
This "might" be in his wheelhouse.

You can also call Jeremy at TRE Motorsports.

I'd also check some of the race shops that support Chuckwalla and Thermal in the Palm Springs area. It's usually the track guys who have the most experience dealing with these types of issues.

 

I heard from both the dealer and Porsche NA that were only charging me what amounts to half price to replace the transmission as a goodwill gesture!!