I've been trying to sight in my bow and wanted to set the pins at 20,30,40. Everyone I've talk to says 20yardsfor the first pin would be fine because your bow is fast enough. Well, when I get the 20 yard pin set and then move up to 15 yards I'm shooting high and even higher at 10. Now it's not like I'm missing the target but it above the bullseye. Is this suppose to happen and you just adjust for it or what? My Bowtech Tomkat is set at 58lbs. with at 27" draw length.