RE: Paper tuning
I've found that ifthings are too far off or if you have any clearance issues, paper can mislead you. Good starting point, but not gospel.
Do the walkback or bareshaft. If a bareshaft flies true, you're in like Flynn.
Once you've got that, tweaking for fletched broadheads will be cake. Don't shoot bareshaft broadheads though.
Good luck.
-Bulz