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I just bought a #60 vindicator shooting a revoultion rest with 340 spine, beman speed arrows, 8.1 gpi. with 100 grain field points. I tried paper tuning and got what I think is a high nock tear, shape of tear looks like a Y. tear down is about two inches. I've tried moving the rest just about every way and results weren't any better. Once I moved back to 20 and 30 yards arrows flew a lil erratic but still grouped decent. Any suggestions?? has any one else had problems with erratic arrow flight? or do i just need a weaker spine?