I have a Kitfox 3 that was issued it's Airworthiness Certificate in 1991. It has an early Rotax 912. The initial setup for the throttle was a rod that was hinged on the left and right side between the instrument panel and the firewall. It had cables running from it to each carb, and one central cable to the instrument panel with a vanier control knob. Prior to my custodianship, this arrangement was removed and a split cable with a single knob from the instrument panel to both carbs was installed. In the other setup, I imagine getting the carbs to sync was a problem.

Just a little back story.

Ralph