Whewn I had the 261 with dual Carter Webers on it still instaleld in Red, and took it to the dyno and included air/fuel monitoring in the dyno run, the dyno operator remarked that it was running way rich everywhere except at wide open throttle (sort of the reverse of what you'd want!), and that it was running (quote) "pig rich" at idle.
So, I agree with the above comments posted.
Jim G
