Your scope set up needs some attention though (avoid useing the drop down set ups if you can). A sample rate of 1us for igntion (check in properties), 20Kv for a kick off and enough time (seconds) on the screen to get a decent capture but not so big the file size is excessive for posting.
Just to close this out . The exhaust valve seats had a small ridge of carbon. Valves were lapped and seated . All is well in New York once again. Thank you all for the input!
Sorry don't have one yet. The customer was in a rush to take it out for the weekend. I should be able to steal it back from him for a finished product snappy.