I've been meaning to de-carbonize the cylinder head and piston crown on mine. I thought I'd try this. I considered resurfacing the head. I've done this on lawnmower heads. I'll mark the mating surface with a maker then take a piece of glass from an 8X10 picture frame and tape a piece of 220 grit sandpaper over the glass and rub in a circular motion until all the ink is gone. Is this overkill?