This forum is more for traditional bows and set ups. Feathers are used by all. The bow tech forum would get you much better responses. As for your question, im not sure. Ive never used a biscut on my compounds. Ive set some up and ill suggest that you retune for the feathers. That is if you decide to switch to all feathers. The dynamics will be different between feathers and vanes, so which ever you choose, you need to tune the rest and bow to them and not switch. I say that, because a biscut is a contact rest, and due to that, the materials making contact will make a difference. Good luck.