Welcome to the new and improved Proflex / K2 Tech Forum!
it *is* the motor, but damn you raced on a cross~link, too!
Yup....it's not only a X-link, it's got a functioning Smart shock
so, I decided to switch back to the X-link and run a trusty Panaracer Dart (I thought it would roll better than the Bontrager....that Bonty is like a Dart on steriods) on the front. I'm SOOO glad I did that....the bike handled MUCH better on that course.