Thanks for the advise guys, I am a retired USAF aircraft mechanic with 30 years of wrenching on just about anything with wings or wheels, but while this engine isn't radical by any standard, it's probably the the most radical I've daily driven. I think my plan of attack on this will be to first swap out the wires with a new set, if I still get some misfire, I'll look at the plugs and try setting the gap to .040". Like you mentioned reading the plugs should give me a hint of where I'm at on the heat range.