No of start bog, No TPS cutting out at 50+, no backfire. Power seemed incredible 2000 to 4000 elev. Starts great everytime. I don't know how it starts after a spill cause I haven't had the pleasure yet. Should I bother going back and replacing the leak/air jets as stated by instrucions on the kit? Access to the carburator on the 07 is an obsolute nightmare! If it were my old XR, I wouldn't think twice about it. But on this bike I have to set aside about a half a day. BTW: How could I forget to replace those jets? Let's just say, a few brueskis, working very late into the night and being very tired all contributed to this &%$#@!-up.