[olddog]

I re-read this thread. You said the engine ran smooth on the dyno, but I get the impression you were not actually there. You only saw a video of the dyno.

I have only walked up and toughed one engine dyno in my life. If my failing memory of what I saw is correct, the engine pretty much bolts up hard to the dyno. There are not rubber or flexable mounts. I'm not sure you could see vibration by watching a video of a dyno. Therefore I do not think you can say for cetain that the engine ran smooth on the dyno.

My other thought is listen to the sound of the engine, especially at idle. Does it still sound the same? This may clue you in as wether or not it is running correctly.

Good luck