Need some help adjusting the jetting on my weber DGV. At idle (~800 rpm) I'm running at around 10:1 F/A ratio, Under load I run between 13-14:1, and at cruising (~2000-3000 rpm) I run around 15-16:1. Where should my ratios be for optimum performance? My carb has the stock jets and the mixture screw is out ~2 1/2 - 3 turns, which jets need to be larger? Smaller? What size? Also I am in the market for a high quality header gasket for a 2.6, Recommendations are appreciated, Thanks.