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A funny thing I noticed yesterday when I was tuning my recetly rebuilt carbs was that the drivers side of the engine was running real HOT while the right side was cool. I mean a BIG difference. I touched the manifold on the right carb and it was cool to the touch even thought the engine was at operating temp. WHile the left side manifold (and the the whole left side) was very hot, so hot that it started to smoke. I shut it off and let cool. waited an hour or so. Started her again and about 10 minutes later it did the same thing. It was so hot, I could not even keep my arm in the left side to turn the idle and volume control screws for more than a few seconds at a time. I have never experinece this with any other aircooled engine. I the ignition system is all new running 009, new cap, rotor, wires, plugs, points, etc. I checked the gap on all plugs, points and also the valve lash. There is minor exhaust leak where the muffler mates to the header. It hasn't been driven on the road hardly cuz I'm in the process of restoring it back to a the daily driver it was. One other thing I noticed that it hadn't doen before was white smoke now appears from the tail pipe. I'm planning to do a compression check. I'm guessing that it might need rings or some sort of top end type of problem. ANy other guesses? Why would one side run so cool and the other so hot? Has anyone else expreince these sort of problems?