I bought some omni-brites today and I shoot black eagle executioners. I looked up the diameter of the arrow and I'm unsure which nock receiver to use. BEE's site says they are .300 but I don't see a receiver for .300. I assume it will work since I already have regular omni nocks. It says to use 2 part epoxy. What exactly is that? Do I just go to the store an look for 2 part epoxy?