WR450 04 Today i went out on my bike and noticed it was leaking petrol from the carb overflow when the bike was runnung and stopped. I continued to ride the bike and it started to backfire badly and when i was in third and statred to open the gas the bike died. It starts and runs again so i know its nothing major. I decided to put the bike on the back the trailer because the petrol was still dripping from the carb tube and it was still backfiring badly. Another problem i have noticed is every time i go into first the bike stalls. It also stalls when i change down and dont keep on the gas. The bike does not stall when it is in neutral. I know these are alot of questions which need answering so i will say thanks now.Another reason i need to get it fixed is because my mate rides a Ktm and he does not stop going on about how reliable his F***king bike is. Cheers guys.