I'm building up some victory rip xv arrows, 350 spine, 24" long, with a 100 gr broadhead. I ran the numbers through archers advantage for my specs and everything is fine spine wise, but my question is, I need/want to add 200 grains In inserts so that I have a total weight of 300 grains up front. Inner diameter of the shaft is .204. In this diameter with gold tips fact system the heaviest weight I can get is 20 grains. What is the best way to add weight?