I am shooting a bear trx 32 set at 67# with a 29" draw. I have used 2 different arrows and cannot get it to paper tune. The first arrows are Vapor 4000 weighing in at 393 grains with tips. The second arrows are pse carbon force 300 weighing in at 358 grains with tips. The tips are 100 grain. I consistantly get right tears with both arrows. The rest is an HHA drop away and I have had the center shot set by laser at the pro shop. I have used powder and have no fletching contact. I have tried to move the rest to cure the problem and get no change. Can both arrows be underspined? At 20 yds the arrows stick straight out of the target so they are overcoming the poor flight ok and i can group within 2", 3" at 30 yds. I havent shot in 20 years and this is all very new to me, things have changed alot. Thanks for any help.