David,

That system works well with an engine that has electronic ignition, but the US41 has a magneto and is practically impossible to start by hand. Mine would start with the spring starter after it had been started with the Miller for the first start of the day, but hand flipping? - never saw it happen, choke or no choke. Maybe after several gallons of run time and it has loosened up considerably.

The choke, pop, and start work fine with my Q52 and Tartan twin on CH ignition, but the US41 magneto still needs the Big'un!

Phil

P.S. Good looking Website! I bookmarked it , so I'll be watching you! What are you running in your Extra?

Phil http://www.quiknet.com/~pheller