What would be my ideal jetting with the airbox and snorkel on, I am wanting to race gncc's and dont want the lid off, right now with the stock filter my 155 main dosent seem right, It stumbles at about half throttle, until it gets hot, I was wondering if anyone was running this or a similar slip on and had some jetting recommendations. it dosent miss or anything at half throttle just kinda falls on its face then picks back up. I am running no snorkel or lid, and stock filter till my stuff comes in. Help.