Well I read through the thread, and found it interesting and informative as usual. It dose not surprise me that there are non-catastrophic issues with the valve train at 60k. As well, the cost associated with the repairs dose not seam prohibitive. We just need to discuss having Jake or Charles relocate their shops' out west!
On another note, I've used Swepco's 501 oil improver to clean out other engines I own, but haven't used it in the Boxster.