last night I finished mounting the engine on the test stand. The choke lever interfered with the idle stop needle. The needle is needed on the stand, not in the plane where idle is determined by the servo. So I shortened the needle and made a new screw driver slot.

First test muffler is a modified (shortened) TD75K, which has the rear muffler wall as pressure pulse reflector at just 3/8" (10mm) from the header pipe outlet. Muffler first chamber volume now is 400cc (5 times engine displacement). This muffler was reconstructed to further test my, and Dick Hanson's experiments, with header outlet locations in combination with extremely small canister systems.

First test prop is a Mejzlik 24x10 three blade prop for small diameter, good swing mass, and light load that may suit the small volume canister.

With closed choke, Four flips did bring fuel (1:25 MVVS oil) to the carb and produced a wet hissing sound. My tank is located 5" below the carb level.
The ignition was fitted with two Li-ion Mn cells (3.8 - 4V each), without any programming and with battery test disabled. (plug and play).
Ignition on, third flip set the engine going on a relatively fast idle. I let it run that way until warm, then shut off the engine.
One hour later, the engine started on the second flip, without choking again. At that time, I called it a day.