I'm only thinking out loud, but you may be underspined with a 2016 for a 60# 29 inch draw with your ribteks. The 125 grain head that you mentioned will have a weaker effect on the arrow, and will not steer the arrow as much a broadhead. I am using a 2018's with my 52 pound longbow at a 30 inch draw and am using 150 grain stinger heads. Which is just about right for my setup.

I'm not trying to tell you what to do, but a 2117 or 2020 might be a better fit to try.

What type of fletching are you using.