I've been having issues with my idle lately and it happened recently. I was cleaning the bike and accidentally hit the kick stand and the bike fell. I was on the side it fell and tried my best to catch it but i couldnt lift it so it ended up just being a really slow and not really harsh fall. It was on grass as well so no scrapes or bent parts or anything like that. After that, the bike starting idling poorly and the rpms would bounce up and down at idle and most of the times just completely die. I tried changing the plugs and doing a re-tune but its the same thing. Also when i rev up my engine high enough, maybe past 10k im not sure, black smoke comes out of the exhaust, which makes me see that its running rich, but i tried tuning the PC3 and changing to several different tunes but it still puts out the black smoke on high revs, any help or advice would be much appreciated.