Subtracting MMC bonus from results

Subtracting MMC bonus from results

Hey guys,
        I have a question about bonus tolerance on true positions. Currently when reporting a true position with mmc the bonus is added to the tolerance value and not subtracted from the actual result. I have a customer that would rather the bonus be subtracted from the result as other sofwares do instead showing the bonus in the tolerance field. So currently I have to do this manually for my FAIR's and becomes tedious , is there a way to change this?