As for starting a constant flow, I never liked the idea of a bottle of fuel in someones hands good way to get someone burned. Just put ignition on a seperate toggle, start cranking starter, then when she starts puffin little alky vapor out the zoomies hit ignition and go racin. Never had a problem just remember to close throttle be for you hit mag, don't want to launch the blower.
Shady folks got shady ways
Dan