The pedal ratio for the throttle is much better but the cable movement felt a little gritty, with a high initial break-away torque at the pedal. This was still contributing to some difficulty with the off idle throttle modulation. The original throttle body position required four tight 90 degree turns to pull down on the throttle body crank (top picture). I was able to clock the throttle body 90 degrees (bottom picture) allowing me to use fewer, more gradual bends in the cable routing. The operation of the throttle is now very smooth and the cable moves freely. I need to make a bracket and install a throttle return spring.

I’m going to try making the mixture more rich at idle. This has an idle stabilizing effect on some engines. The idle is much better but the engine stalls occasionally as I’m coming to a stop when I get off the throttle quickly. The RPMs dip very low before stabilizing…sometimes resulting in a stall.