Thank you for the comments...Sandy

I had the same issues with my Chipmunk and the twin's carb ( it is the older airbleed style) and the tank located too high...

I have had many thoughts on converting it to gasoline w/walbro carb...but Idealy it should have 1-carb per cyl... so 2 carbs total...
Would be a tight fit.. or very clever placement...

The Twin is already spark ignition... from the original C&H ignition.

I had also thought about doing a perry pump, and rout the oil outlet through a catch container prior to going through the perry pump...
I would have to open the catch can and drain it occasionally...

Perhaps one could use a I-V style bag for fuel tank??? This would keep the fuel low, and never change position in relation to the carb-fuel tank line...

I have thought about that from time to time.. but fuel draw may be a issue... due to no clunk??? I guess I should post that q in a dif. forum post!...