[Bill D]

After analyzing the situation more, I’ve come to the belief the piston domes are kissing the plug electrodes.

I just got off the phone with the tech support guy at NGK spark plugs. Told him my situation and they were able to find a shorter spark plug with a better heat range for my compression. Going to get those today install them tonight and crank it over without the coil wire attached. Then I’ll pull a couple plugs and see if that fixes the problem.