Evan is right about the temperature. I tried starting mine on a cold morning with a brand new dynatron on a fully charged battery and almost didn't fly that day. And yes, it does get that cold here in Florida some times. [sm=shades_smile.gif] I have also read many posts about draining the fuel from the lines and do so before packing up for the day in addition to spinning it up with the glow plug on to burn off the excess fuel in the crankcase. Haven't had any more cold days yet and have had no trouble starting since although it is supposed to be around 30 degrees on wednesday. We will see how i do then. Draining the fuel lines has also eliminated the spots on my shop floor.