I also wanted to shot split, but found I shot better 3 under, I was anchoring my index finger at the corner of my mouth. If I shot split I anchored middle finger at the corner of my mouth, but the pain in my index finger shooting split was too much to bear. Finally I decided that I shouldn't be locked on the anchor being at the corner of mouth, I changed it to the lower front of my cheek bone (I also feel at tooth right there) and Voila! The pain was gone the release was better and the shooting got better. It also shortened my draw to 28" from 29" but I figure so what. I guess my point is don't get locked on any certain thing, experiment with an openness to get the whole thing working and you will find your niche. Good luck