Hello, i purchased a 2012 smr 511 recently and when im sitting at stop lights the bike cuts off. I can hit the starter to get it going again but its really annoying. The bike came with a full fmf exhaust and looks like some holes drilled in air box on clutch side. It is in race mode 2 also. Wondering if all the air flow is overpowering the amount of fuel? I also took the foot shifter apart to powder coat and can not for the life of me figure out which way the spring goes back in! Would appreciate any help! Thanks!