Rich condition , everything was fine before you rolled the bike , i take it ?... i'm not really familiar with these carbs , but it sounds like something is stuck or loose (diaphram ,siphon tube, needle hung open ) i would completely clean carb , with carb cleaner , blow dry w compressed air (controlled) and look everywhere w/ magnifying glass. You have something stuck in there somewhere, Don't freak out , just nail the tinyest details ! If your adjusting idle , and does really do anything , you have fuel running freely into your engine !! Hope this helps , i wish i could give more detail .. Good Luck with that !!!