[charlie66]

Here is a pic of a plug that is very rich, and needs to take some fuel away , and a plug from a nice clean mid 9 second pass, this one was a little bit lean, added 1 psi fuel to it and picked up 3 mph. Note: Might need to take a bit of timing out of this tune up or use a colder plug, some deterioration on the center electrode however ground strap looked ok. It's also possible on this tune up that taking both fuel and some timing away might have been even better.