I am told that my lightwin 3 horse has a Reed valve problem. I am not to sure exactly what it is but here is what happens. It will go for a ways when the engine is cold and eventually shut off then as soon as it shuts off i can start it up with a pull and go for a short distance and so on. I do not know where I could get reed valves for this, I was not able to find any on this website or do I know how I would go about changing the reed valves, if I could get some direction it would be greatly appreciated.