Replying to Help Me 270 Off!

Ive been riding for about 4 years on and off, and park for about a year. Ive boticed that I cant 270 off of rails, and its pissing me off. Ive gotten a few off of boxes, but even then just barely. The problem is that i dont have enough rotation. I can get tons of pop off the ends, but i just cant seem to get past a 180. Ive tried winding up, but that looks gay, and still doesnt work. My problem may have something to do with me not center mounting my bindings(i dont know what the fuck i was thinking). Any help is apperciated, and be specific if you can.