Going from 37mm Venturis...

[ecksrash]

I've uncovered a tuning problem with my IDAs. I have and can see a lean hole with my wideband. I've tried to take care of the problem by adding a larger air correction jet to bring the main jet on earlier. It has been suggested that I swap the 37mm venturis and F11 emulsion tubes to 40mm venturis and F2 emulsion tubes. I'm worried that if I do I'll loose a bunch of bottom end. What are your thoughts?

[madmike]

go down on the airs
maybe F 7's
You may need the 3rd progressive hole driled