ORIGINAL: Cougars09

I have been shooting VERY extensively lately. Got my new cam and split harness back on my bow yesterday. Got her timed, shooting bullets through paper. I'm driving tacks with field points and the Muzzy MX-3 practice head, I'm feeling good. I decide to try to shoot a regular hunting Muzzy MX-3. 20 yards, 4 inches low 3 inches left....try again, same result. Back up to 40 yards, 6 inches low, dead on left and right. My arrows spine perfectly, tearing bullets through paper. Tried it with the Predator vanes and Blazers, same result. Any recommendations? I don't want to move my sight just for broadheads. I'm still shooting alot of 3-d. For the first time in my life, I'm seriously considering a mechanical.