To get bh's to impact like fields you must move the rest / nock. You micro tune according to the Easton guide or use the walk back method. You must change the tune of the bow to get them to fly alike.

If your bh's are impacting diff. than your field points and you are satisfied with that then you move the pins to put the bh's in the X. But you fp's will now be out of the X

If you cannot get them to group the same and just adjust the pins, mark the windage and elevation on your sight for each one. If you have a good micro adjust sight it is not that hard to do a quick adjust when you switch from fp's to bh's.