corey, as a rule Mangnus heads like stiffer arrows and a minimum of 4" fletch with a good helical. Offset doesn't seem to cut it with these larger heads. The magnus stingers are the exception to the rule for magnus heads though. I had my best luck with snuffers on stiffer heavier arrows with 5" vanes and feathers fletched right helical. That may help you some. Remeber also to spin test each broadead. Magnus tries to get them all straight from the factory, but once and a while one comes out with the adaptor and head not lined up. you can fix that by heating the head a little until it's loose, then push and spin it back on until it spins true.

TAKE YOUR KIDS HUNTING AND YOU WON'T BE HUNTING FOR YOUR KIDS