I would guess your nocking point is a bit low, you may also like to put a dab of glue on the leading edge of the fletch where it meets the shaft this will help reduce the blood loss.

No doubt someone else will be along to give you some better advice.

Best regards, Pothunter.

I bought a used predator and my first shot with it my feather laid my bow hand open in the same spot your talking about. I felt like and idiot. I mean who gets there hand cut be a feather. haha. But i increased my brace height and raised my nocking point a little and it helped a lot. Although if i let my bow hand palm roll away from the bow it will still happen but not near as bad and i haven’t had any more blood loss.