Hi. I have a question about jetting my bike. I am new to this and wonder if someone experienced can give me a few ideas. Temp is 17 degrees celcius. Humidity 77%. I am 70-200m above sea level. My bike is a stock 2001 WR426F - only mod is that I´ve removed the airfilter box cover. I´ve not touched the carb settings so its stock european setup. My problem is that when I run at 1/3throttle the bike runs uneven. When I release the trottle after hard acceleration it backfires. If I release the trottle slowly there is less or no backfire. When I removed the cover for the airbox there is more backfiring but less uneven run on 1/3 throttle. I´ve mounted a Trailtech Vapor to the bike and it says that watertemp is around 61 degrees celcius while riding on the street. All answeres will be appreciated.