i had the same problem last week. i was just foolin around and changing some stuff out and tinkerin (you know stuff i should of left alone) anyway i wasn' t really changing anything on the bow itself just stabilizer, form, release, and different mechanics. when i went back to shooting i was scattering them all over the target. at 30 yards i was shooting low left in about 4inch groups. [:@] i slowed down went over my release and found that i had gotten away from the tension release and fallen into old habits of punching the trigger. this was making me push my bow down and away during the release anyway back to the tension release and shooting knocks off at 30.

your release can make all the difference