I wish a dual carburetor setup was in my budget, IÔÇÖve just about lost my patience with the single carb. I ended up drilling about 6 1/16ÔÇØ holes, got the thing to idle without exposing the transition ports but I had to turn out the mixture screw more than 2 full turns and it still ran on the rich side and rather rough. I was wondering what values I should be reading on my wide band at idle, currently IÔÇÖm around 12.5 to 13. The engine does run smoother and I feel like I have more power but IÔÇÖm getting horrible gas mileage, about 7 mpg. IÔÇÖm thinking about switching to one of the older milkuni solex mechanical carbs that came on the earlier monteros.