Motorcycle Help (2006 Kawasaki Ninja 250)!?

[Joshua]

Hi, I recently bought a 2006 Kawasaki Ninja 250 and just realized a small problem. The bike starts up and runs no problem, but there's a small problem when I'm opening up the throttle close to wide open. When I'm about to change gears I usually rev it up to 9 or 10, but when I get past 8 the gas gets cut off for like a second then comes back on (so I lose engine power for like a split second, but then it gets up to 9 or 10 revs). SO when I'm opening it up to high revs the engine loses power for a split second, but then gets past the point and I'm able to ride smoothly still. This usually only happens when I open up the throttle fast, when I gradually ease on the throttle the engine doesn't stall at all. So could this be clogged up fuel filter or fuel lines? Carbs? If you know whats wrong I'd be very appreciated. Thanks, Josh