from what ive seen of the bow sharkey, the allen head bolt is tilted down in the riser some, and when i tried to back it off some for him man it takes everything in me to barly move it.. he said when he bought it, it was used and he had only bumped up the poundage once and now this is whats its done.. ive shot bows for many year and never have seen this.. but any thing else on this to help him would be great.. thanks again for the replys