How much difference does one or two grams make? NONE.
Consider that Mopar engines had the WORST balance jobs of the Big Three and there weren't any problems with that. I believe that allowable was something like 1/4 ounce either way, maybe more. IIRC that's something like 7 grams.
Consider too that the formula for balancing a V8 is not derived mathematically but is empirical based on what "works". Then there's the whole issue of over or underbalancing.....
