You will most likely have to grind the cams a bit. I'm using a match race with an old fat dynafiber mast and the cam arms were originally too narrow and the rollers did not touch the mast. The solution was to take dremel and sand paper. Take out the cams from the sail and place against mast and you will see how much you need to take off.
Don't sand too much or the cam will pop off the mast. But you definitely want to take off enough so the rollers smoothly move against the mast itself with no friction. I took off a lot and didn't have problems. The sail rotates stiffly and it needs a punch/kick but from what i've read online this is problem even when rigging on recommended mast.