I have a 2010 martin cheetah. I have tried to broadhead tune this bow for a while now and cant seem to get the broadheads and the field tips to fly within 4 inches of each other. I have tried 2 different spine arrows and every time i shoot, the broadheads fly high and to the right. If i move my rest over to the left like you are supposed to then there is still at least a four inch gap between the field tip and broadheads. I have no cam lean at the top and my broadheads are lined up perfectly with the vanes. I have no idea what the problem is and i was hoping you guys could help out. Thanks.