Nathaniel

I just bought a 96 banshee and has D&M cool heads and a lot done up. i had takin it out for a ride and noticed that it would it the power band and when you would have the throttle wide open and switch gears, it would bog a little and then get back into power band. why is this ? i cleaned carbs, filters clean, got new spark plugs, got 27.5 jets. needles seem fine (idk how to change or do anything to needles) everything else i could think of. why does it do this? other than that it idles GREAT and once it hits the power band it has power so it doesn’t lack power at all.