Originally Posted by
Glowgeek
Same thing on my 200Ti, drowning the front cylinder at idle and drowning the rear at mid range to just under wot. Worst disparity between cylinders I've experienced. It does use a rotary sliding throttle barrel. CDI will help with dropping cylinders but this engine may not be a good candidate for gas conversion using the factory carb. Ideal would be to use Chris's design or run two carbs on short intake runners, like the Saito 300T-TDP.
Your engines troubles are complicated by the fact that it basically is an odd firing twin, BUT drawing from 1 carb. That always messes things up.
Things should be a fair bit better with double carbs.