i just got back from riding like an hour ago and i was practicing slow wheelies and one time i brought it up from a dead stop and went to far back, i tried hitting the back brake but i realized i wasn't even on the bike anymore, i was running with the bike while it was just sliding on the 12 bar by itself. it was the first time i scraped it up :YEAH. i went back so slowly i didnt even feel it hit the ground. so i hit the kill twitch and it came back down and fell nicely. after all that my friend takes it for a ride and was trying to do a circle when for some reason the bike came straight down (he doesnt remember hitting the brake) and he banged his knee off some thing and now his knee is fucked up. which sucks cuz he just got his f4i fixed and just got his round bar and FI cage today and hes probably not gonna be able to ride for a month.