RE: Whisker Biscut set-up
If your vanes are indeed hitting your riser, your arrows are surely fishtailing. Now, w/a fieldpoint, you may get away w/ it, but not w/ a broadhead. Paper tune the bow, just as you should anytime you install a new rest, and your problem will be solved.
Also, if indeed your rest is where it needs to be, turn your nocks so that the feathers are positioned differently. With a WB, cock vane position isn't relevant. No need for up or down. It could be diagonal and it wouldn't matter. I bet dollars to doughnuts your rest isn't in the right postion.