Bobby,
You have been shoddily treated by your OPC. The lesson you learnt is a good one, always go to the technical, rather than the customer relations staff when faced with mechanical problems. The confusion over the filter component, being a fuel line filter rather than an air filter, wasted much of your time.
The sorry tales on YouTube are not to be taken dismissively, but it is often the squeaky wheel that shouts loudest. In my 11 years experience of owning 5 Caymans I have had to resort to faults claims only twice, and on different cars. A gearbox transaxle replacement on my 2.7 Manual, and rear hatch gas struts on my 987.2 Cayman S. In both cases the repairs were concluded within an acceptable time and under warranty.
Jeff's comment on cannibalising a showroom car to get you mobile again is a valid point. You, as a customer of a new car should not be off the road for 8 weeks and more awaiting a parts order. Good luck with your efforts to get your car back on the road. Hopefully the driving pleasure will overcome your bad experience in time.
Brian