I have no doubts that yours ran smoothly, I'm just going to chalk it up to manufacturing inconsistencies. I would have tried swapping out the rotating assembly if I had kept the airplane. In the end I decided I wanted to get back into a 150cc bird.

Shultz, that is an easy question. First DA has never put a lot of effort into their website secondly, they prefer to service the engines themselves rather then the end user. In the couple times I have had to send in an engine to DA there were no labor charges to repair my engines. The will sell you any part you may need though.