If you torque the bowstring, you will have left misses, for a RH shooter. You can tell if you are torqueing the bowstring and/or bow by relaxing your grip on the handle at full draw and noticing whether the bow wants to change angle (usually to a more upright position). You torque the bowstring when you put a twisting pressure on the string with your string hand. You torque the bow when you put a sideways pressure on the handle with your bow hand (the thumb is sometimes a problem for me in this regard). The result is the same: left misses.
The solution is to relax your string hand so that the back of your string hand is parallel with the string. As you have noticed, this is a little hard to do when you want to cant the bow to the right, but your string hand wants to hold an angle in the opposite direction. It helps you to relax your string hand if you take a deep hook on the string, but taking too deep a hook makes it hard to get a clean release. I like to keep the string in the crease of the joint of my middle finger, and forward of the joint of my other two fingers, but each person has to find his own best position. I've never tried the string position you describe, but if you can use it without torqueing the bowstring and can get a clean release, then maybe it will work for you.
To avoid torqueing the bow with your bow hand, hold the handle toward the thumb side of your lifeline, and make sure all the force is pushing toward the target, i.e. the forces of your fingers and thumb holding the sides of the handle balance, so that the thumb doesn't press harder against one side of the handle than the fingers do against the other side.