I have a frankensteined Neptune Wc1 that has the carb, reeds, and throttle/mag plate advance lever from a Model 500. I have had trouble with it idling down, it runs fine at high speeds but coughs and dies at slow speeds. I have checked and the low speed passageway is clear. I believe that the low speed needle is damaged, and I wondered if anyone out there with a model 500 can find a picture of what a good low speed needle looks like. I can provide any pictures of the motor if necessary.
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