How far are you shooting that they hit 4-5" left?
Shoot the bare shaft through paper, sometimes a target will make the arrow lean.
I'll disagree with Andrew a bit, I'd move the rest a little at a time and see what happens. By a little I mean no more than 1/32 at a time. Most of the time the centre shot is just set up by eye anyways.
I don't think these have a split yoke you can tune. How does the owners manual tell you to adjust for it?

Broad heads hitting left means a tail-right tear in paper.

You will likely have to adjust your sight a bit after you get the field tips hitting with your broad heads but that is the easy part. If they don't hit together then your bow isn't tuned.