ill definitely check and compare, wow thatd defintley suck if it is the tip of the plug, crazy the car is completely stock, stock tune everything. Good eye sir.I would compare that plug to some of the others. It looks like a piece of the ground strap is missing; the tip appears to be jagged and short. Also, the piece of metal on top of the piston in the other photo looks like it could be the piece that's missing.