RE: Whisker Biscut set-up
Sounds like the WB is too far in. You definitely don't want your vanes hitting the riser. I'm not sure how that wouldn't be affecting the arrow flight. The WB can be a little tricky because you can get good groups even if it isn't tuned properly. My experience with the WB, and I haven't figured out why yet, is that more often than not I will have to set it out as far or nearly as far as it will let me. I've got a decent pro shop that I usually go to but I wouldn't consider them experts when it comes to a WB. If you don't know how to tune it up you might take it back and see if they can check it over, maybe paper tune it. Or take it to another shop if you have one around.