Every article I've read says to move the rest a little to the RIGHT if the BHs hit left of FPs. They also say that this doesn't always work, and that the most important thing is to get good groups. In my case, BHs hit 4-5" left at 40 yds. Moving the rest hasn't helped, so I just move the sight out a little before hunting.

Never trust a bow under 40 (inches).