I don't know if you shoot split or 3 under, but in my experience a lot of problems like you are experiencing with a tab tend to resolve easier when shooting 3 under. 3 under tabs are much simpler by design, and just placing three fingers together on the string seems to simplify grip issues. YMMV, of course; lots of people are happier shooting split.
Your tail right issue could be a symptom of alignment problems starting with not transferring to the back muscles, leading to not getting the drawing elbow behind the arrow, leading to a tense drawing hand, leading to a bad release. Easier fo work these things out with a lower poundage bow. Hard to tell if any of these problems exist without watching you shoot.