I just switched my from a QAD LD ultra rest on my Mathews monster 7 to a QAD HDX because i had it. After putting it on and doing some adjustments i tried paper tuning it. i couldn’t get two arrows that told me the same thing, one may tail an inch to the left and the nest would go 4 inch the other way. i shot probably 30 arrows while adjusting some things and couldn’t get a better result. i went as far as taking a slo-mo of it to see if my veins were hitting the rest or if it wasn’t dropping fast enough but neither seemed to be the problem… the only thing i saw that may be the issue is the string to the release is a bit thinner than the one i had on it before and there may be enough slack in the string to come up and catch the veins.

Is there something i can do fix this? or something else that may be causing the problem?