timing chain question

IMO if you are building an engine that is using an aftermarket cam you should be degreeing it in to the cam manufacturer's specs. I have never seen a timing set and cam that matched up 100% correct. I've always had to use the offest keys to get the cam timing dead on. I suggest you degree the cam in and use the offset keys to get it installed exactly as Comp Cams suggests then you will be getting the most out of your cam.