It sounds to me as if you used the hinge slotting tool for plastic pinned hinges. Do Not try to use CA type hinges in those slots, you have two choices 1) you can buy some pinned hinges and epoxy them in or 2) you can move the hinges over and use only a Xacto no. 11 blade (in a handle) to cut new slot off to the side of you existing. As I understand you have only cut the slots in one surface so it should be very easy.