I am the last person to be giving advice, but I will offer what I can. First, even with a center shot bow, you will experience the archer's paradox to a degree. Have you ever watched the Olympic archers in slow motion? Their arrows wriggle like a snake all the way to the target. There will always be some wobble, but there shouldn't be much. Maybe you could post some video shots, particularly from behind, so the really knowledgeable archers can analyze your form and your equipment. You will get lots of good advice from the people here. Keep working hard and improvement will follow. Good luck.