Stimpy,
Dad went to a hunter ed trainer class this summer where they were teaching the instructors new things. They used several different crossbows and they found out that if you use your hands to pull them back the pressure is not even on the prod and it will shoot off to one side or the other, but if you use the cocking arm or what ever is made for the crossbow to use it fires straight every time. They had reps from 3 of the bow manufactures there teaching them new things, makes me wish I still lived in Kentucky as I was an instructor down there with dad.
Greg