RE: arrow placement on target
i had the exact same problem with my bow and arrow set up. I shoot easton axis in 340 that are 28 inches long and 2.25 inch quick spins and with muzzy's, razorback 100, and land sharks they all flew like crap I switched to slick trick 100 and rocky mountain iron heads and those two broadheads fly perfect so i would say start by fixing the cheapest part and try slick tricks they are really nice.