the bike runs fine once its warmed up and all. but the problem i had today is: when i went to the gas station, filled her up, she cranked fine but when i put it in gear it dies. so i crank it back rev her up alittle higher, she dies again and again and again. finally she stayed running. any clue to what this could be? i would think she was warmed enough.. now the bike is new to me so any input will be appreciated.