Bike-06 yz450 jets-170 main, 45 pilot, stock needle in 5 postiton, aftermarket fuel screw Location- Virginia Beach, VA. What I did- Completely took apart the carb and gave her a good clean and look through. Once i put it back together and on the bike, she started in about 10 kicks. Once it started it would shut off after about 10 seconds of idling. It did this 3 times. After the 3rd time it stayed idling. once idling i noticed the carb was leaking fuel, it was really hard to tell where it was coming from but it seem to be the accelerator pump but still a little uncertain. The thing that concerns me the most is the bike got extreamly hot really fast, like the bike was idling with the choke on for maybe 5min (and would not stay running with the choke off) and started to push out Radiator fluid from the overflow drain. Does anybody have any help for me here or where to start as far as tuning. Another thing My aftermarket fuel screw that i have is weird to me or maybe its just me but. How far is that screw suppose to screw in? Does it go until you cant turn it anymore or until you start feeling a good amount of resistance? This is my first experience with going through the carb tearing it down and trying to tune the bike. So please guys go easy on me!