Did you check your tuning after increasing draw weight? The 4560's are not meant for over 60 lbs unless you have a short DL and arrow and a lighter tip than 100 gr. I never rely just onpapertuning but check paper tune and see if the bow is still in.

Depending on your bow, arrow length and draw length your arrows are probably underspined with the increase in draw weight. Which way are the BH's flying differently, left, right, high low, a combination?

Try tuning like passthru stated and see if you can get them back together.