Got a new bow a few days ago -- Bowtech RPM 360. I sighted it in yesterday, and got elevation perfect, but I am shooting consistently left at 20 yards. I've adjusted my sight as far as it will go to correct for windage and I'm still 2-3 inches left on every shot at 20 yards. I'm getting 1 inch groups, but all shots are to the left. Any advice on how to fix the problem is appreciated.