I am new to this myself but have learned a tremendous amount on this site. I have a pre-ignition problem myself,,,I seem to align the arrow during draw and tend to let fly before or immediately following reaching anchor. I have found one solution,,, that is, during draw, I align the arrow off to the right of the target.
When I hit anchor, I snug it in and set elevation, then align windage and let fly. Sounds crazy but this forces me to hold for about 3 seconds and has improved my group size dramatically.