I can't read a used plug accurately after the tune up has been changed, can you work
Put one new plug in # 7 cylinder and make one pass and get it out of the motor ASAP before returning the car to the pits and post a picture of that plug on here up twocents scope
I'm thinking the mixture is to lean but changing the timing may have put the spots on the center proclyn I'm seeing from the first pass confused shruggy

Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)