RE: Horrible shots!!!
The first thing that probably needs to be changed is the draw length because the loop has put your release hand back further than you are comfortable with.You might be a be to purchase a short head release to get some of that back but ime,you will still need to shorten the bows draw length a little to get comfortable anchors and solid wall.
Secondly,have the bow checked out to make sure that the bow is within specs with the new rigging.It is quite possible thye length is off on something and giving you issues.
Third,make sure the arrows are the right spine and there are no contcat issues with them.