My KCG -950G generator won't run without the choke open in cold weather and stalls out when I put a load on it. I think it's because the fuel line or carb freezes because I when I take it in the warm garage for a while it will run fine but when I take it out in the cold it miss-fires and stalls unless I turn on the choke. What can I do to solve this problem? OR It this a warm weather generator?