One piston is 10 grams light. Machinist says he can't take 10g off other 5. Pistons are coated and flycut. Any options other than find a new matching piston?
If it was mine I would want it as close as possible could take the weight out of the pin. On another note I highly doubt 10grams off on the pistons would change a thing. Also that is weird that just one piston is off 10 grams compared to the other 5 was one machined wrong or different to the other 5?