So I have been having one heck of a time getting my arrows to group after getting my new bow. I was previously shooting a High Country Supreme passed down from my father and was driving tacks with it. After deciding I would like a newer and quieter bow that was set up for me, I chose the Hoyt Rampage XT. I love the bow but I have been dealing with one thing after the next. First, the shop where I ordered it ordered the wrong draw length, which I was unaware for a week or so. Bow felt off and I was uncomfortable shooting it with poor results. Got that figured out and was tearing up fletchings through a whisker biscuit after relatively few shots, which I thought was a clearance problem. Used lipstick on the front an side of the riser shelf but couldn't find any on the arrow/vanes. Went back to the bow shop, the owner telling me the marks on the arrows were "normal" and he wasn't worried about them. Also said I should buy better quality arrows (I was shooting Cabela's Carbon Hunter 340s) So I purchased Easton N-fused Bloodline 330s with 2 inch vanes. Still not grouping consistently and leaving marks on the factory cresting 5 inches in front of the vanes and leaving a black mark on the vane in the 8 oclock position (looking at the nock). Back to the shop...owner still said he wasn't worried but he would check for clearance but come back next week as he was out of the powder. At this point I was fed up and haven't been back. A new store opened closer to me (Academy Outdoors) that has a bow range and staff. So I took the bow there for them to look over. They made a few minor adjustments and tried to paper tune it with my arrows before they decided to try a different shaft. They said my arrows were too weak, and that a cheaper and stiffer Carbon Express shaft (can't remember name, not on website, saw the shaft myself) made a better tear. When I took the bow home my groups were miles better, so good I cannot shoot groups now after busting two nocks. I also definitely notice the arrow tailing right as it flies to the target, though. I thought my spine choice was fine based on easton's charts, but could I possibly be underspined at 330? I am currently drawing 65lbs @ 30". Arrows are cut to 28.75" with 100 gr field points and no added weights. I tried plugging all this into OnTarget2 but I don't have any experience with this program and wasn't able to obtain any useful results. Any help would be appreciated..thanks in advance!