Def not done by man, the other 5 plugs look normal.

I wish I could remember which cylinders it was last time to see if it is a trend with the same cylinder, but I don't remember.

I mix race gas with pump gas because I was having issues with the fuel boiling when the weather would get hot ever since they started to put ethanol in fuel.

Ignition is an MSD 6AL box, running MSD street fire 8 mm plug wires.