I was searching CSC failure (because I have the exact same problem as you described it), and found your thread, just after I made another one in gen discussion. Go figure. I'm thinking about going the same way as you, and just going all out now, for the possibility of going forced induction in the future. You can find my thread, listen in and/or ask questions. I find the tech area is mostly barren, even for tech questions.

CSC Failure