Hey guys I have an 03 polaris magnum that's been giving me hell ever since I got it. Long story short I haven't had it running for a while do to it not being able to go above 1/2 throttle without bogging down. Well I've tried a a bunch of different things adjusted the carb and all this and I finally figured out that it's starving for air. I left the top of the airbox uncapped and it ran beautifully but now I'm wondering why it would be starving for air at above half throttle all of a sudden