Spits at higher rpm in power and when warms up runs worse

[Kb35001]

Ok I’m new to this forum I have an idea of what I’m doing but can’t seem to figure out the issue I have an 02 banshee pretty much bone stock with pro circuit pipes my quad runs great at idle and putting along but as soon as I wanna climb or hit power and it spits and acts up I have 27.5 pilot and 280 mains both carbs synced brand new plugs and reeds are new v force can anybody help