i had this same problem last fall when changing from aluminum fletched arrows at 28 inches and 125 grain thunderheads to gold tip hunters with vanes and 100 grain thunder heads all with 65 lb draw. i think because i changed broad head weight it made my arrow flight corkscrew after twenty yards. anyways, i asked the guy at the proshop and he threw my arrow with the broad heads on the straightness checker. When rotated every one of my broad heads was wobbly as hell, even the ones i had never shot. That could have been from the inserts not being glued straight/correct or from crooked broad heads. try checking the broad head alingment and adjusting as necessary, or maybe try changing to higher quality broad heads with shorter blades (not cutting hole, blade length). Also are you hunting or target shooting? If you are hitting good groups at forty yards i wouldn't worry about paper testing. Are you gonna be shooting papper or bucks? Bucks don't care if you puch perfect holes. Check that your rest is centered properly and that you nock point is still correct. Streching/wearing strings can change the nock point and travle.
good luck