so i bought some cool flex from bohning to install my own nocks after i squared both ends with my new f.a.s.t. from lumenok, and now five out of six inserts have pulled out in my target. (two are still in there) What did i do wrong? not enough glue? how do i ruff up the inside of the shaft to hold better? should i get better inserts than the one's that came with the six pack. would have switched to harvest time but cx sent me a free six pack of blue streaks for some reason(warranty-remember the picture of the hanging golf balls, i just asked why it happened) and used the cheap looking inserts that came with the arrows.