Well, got my 2012 RSS back from Sport Durst today. After 2 trips there, and over 4 hours total of diagnostics, it was determined that the selinoid in the transmission was bad. Everything seems to be working great and I hope to give it a drive this weekend. They gave me about a 20% discount ($100), and only charged me for installation as a way to help me get back on the road. I hope this takes care of things, but I will again give them credit for doing a truly professional job.