Hey there, I have a BME 102 and I hab a factory ignition on it but wore it out. It never kicked back, ever! After the old ignition was replaced with a new sychrospark from c&H mine started to have a slight kickback on the start as well. I am SURE it has to do with the timeing. It has never bitten me but I have errored on the safe side and use a stick. If you figure out the problem let me know.

Kinda nervouse when starting,
Tony