Mixing-gas

I recently modded my airbox "removed snorkel and put outer ware across top of lid and put in uni two stage foam filter"I now bog at 3/4 to full throttle and have some hesitation going into powerband. So I am assuming I am running lean and need to up my mains but not sure by how much. It's a 06 all stock other then the modded airbox. Currently has 200 mains in it