06' WR450 with free mods and stock exhaust. Well I decided to get a little wrenching done on my bike which I bought used June 09'. I have been experiencing some starting problems with the bike so decided to take the carburetor apart and check all of the jets for debris. Found a little bit here and there but cleaned everything up and also INSTALLED an R&D Flex-Jet for some extra tune-ability. Bike started up after 3 kicks and idled fine, but when I would crack the throttle open I would get some bog which would clear with higher RPM. I never experienced this when it was running correctly. Do I just need to purchase a different leak jet? I would have thought that it would have ran pretty close to my original settings, but I could change with elevation.