You can't go too much on the mixture screws. The idle bets way fat and then other issues develop. I went up one jet size on the primary and two on the secondary. It is near perfect. I will step up the secondary pump squirter a bit. If that doesn't do it I'll step up one more jet size on the secondary and then back the squirter back down. I'm not going to buy a wide band for this truck, it's not that critical.