Yeah, thanks for the help. Guess I need to take apart the sheet metal chimney pipes. It made a scraping noise, does the sheet metal ever change shape? I was thinking maybe it is bowed a little from the heat and its touching the sides. I am more used to a manual damper, I guess this automatically closes to prevent the wind from coming down and blowing out the pilot?
It's been running good now for a few hours and it does go on and off.
Thanks again.....gotta love gas, clean, easy, quiet....oh and its a peerless cast iron boiler, I had it wrong.