CRANK WOBBLE!! Updated, found problem
This is kind of my own fault. When I designed and built the engine The minds that know about these things were telling me that at the usual 6 to 7 lbs of boost I was running a second key was not required as the requirement for a second key starts at around 10 to 12 lbs of boost. Me being the adventurist that I am decided to push the limits this spring and change the pulleys to give me 10 to 11 lbs of boost. It was fun while it lasted but as usual it bit me in the ***. I am just happy it wasn't worse. A new damper will be ordered today and we will try again.
Jack