You can also develop a problem condition if the bowstring is pulled up far enough to deactivate the anti dryfire device (DFI), but not far enough for the hooks to catch the string. The bow can't be ****ed when this happends. FIX: depress the DFI with something that fits between DFI and scope base (flat screwdriver blade or piece of wood) while pulling the trigger. Hooks will pop back up allowing the bow to be ****ed again.