If it's the alignment pin, it should be obvious by laying the bow (unbraced) on a flat surface. It's probably the pin, if you made the same mistake I did. LOL Mine was very sligth, perhaps 1/32" off at the pin and I more or less built the bow around it. Fortunately I found my mistake before I cut the limb profiles or string nocks. If you have enough to play with, you can just narrow the offending side, depending of course on how sever the misalignment.