RE: how to correct short draw
I had the same problem with a different cause.
My very first bow was a hickory backed wood bow. The bowyer told me not to hold it too long at full draw because it could fail. I took that advice to heart and developed a snap shooting technique where I was releasing the arrow out in front of my face. I couldn't break the habit to save my life.
When I got a recurve it became really obvious and I decided to do something about it. My girlfriend is a licensed hypnotherapist and I asked her if she thought she could help me with the situation. We sat down and discussed exactly what I wanted to accomplish while she made some notes. She then did a short session with me.
The very next time I went to the range I purposefully tried to not think about what I was doing. On the first shot my hand came back, my finger nestled into the corner of my mouth, and the arrow just sat there, rock solid, until I decided to relax my fingers. Every subsequent shot has been just like that so I'd have to say that it worked for me.
And before anyone asks... No, I do not have unexplained urges to wash the dishes or do the laundry.
Guy