Ive got two bows out of my arsenal that for some reason my 20 yard sight pin is so extremely low that I cant adjust hardly at all to use a 30/40 yd pin. Is it my anchoring point- could be the sight itself? ( I use Cobra sights on 5 of 6 bows) I mean my 20 yd pin is almost at the bottom adjustment. Does this make sense the way Ive worded it.