In my case, when this happens, it means I'm shooting too much. Lay off for a week or so (I know its hard to do), then try shooting no more than four shots at a time. I like to come down to one shot groups the last couple of weeks before hunting season. Get up early in the morning, go out in the back yard in the pajamas and slippers - fire one perfect shot. Put the bow away and go to work. Great therapy.