I want to get 1 dozen arrows within 5 grains of each other. To be clear I want the lightest of the dozen to be no more than 5 grains lighter than the heaviest. I know this means weighing ALL the components before assembly to get the arrows close. But of course fletching cement and insert glue is a variable. What can I do to get the completed arrows closer in weight? Grind a tad off the back of the threaded shank of the broadhead to bring the heavier arrow down a tad in weight? Add a thin washer between the insert and the broadhead to bring the lightest into spec? What do you guys do? Am I being too anal?