Well I started this thread and would like to defend super tigre. I tightened the head up and I am happy to say that after about 30 mins of break in the engine is runnin great with no ill effects. It's idling well and was dragging my saw horse around at wide open. Maybe all that is needed is for manufacturer's to add a line to their manuals. "Before starting check all bolts for tightness". Problem solved. I know i'll check them every time from now on.

Well i'm off to burn some holes in the sky with the skrike,
Matt