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Russ, I think Gman has pointed you in the right direction. If the clutch disengage motion goes too far, it can effectively engage the clutch again. Usually adjusting the pulley brake to engage the pulley sooner will keep that from happening. The adjustment on the castle nuts will give you a good "snap", and lengthen the life of your clutch. I think even the owners manual will detail these two adjustments. I'd also suspect the tank as the source of the rust. A good cleaning and a tank sealer may be in order. Also, the screen on the sediment bowl could be gummed up and need cleaning too. I've had good luck with a pump driven parts washer spaying in to a substitute gas line for a minute or two with the throttle held open and blowing out carb junk, gummed up jets, etc. Even if it doesn't work, it's worth a try; sending one to Robert's is time consuming and a bit spendy. Get all the parts cleaning solution out of the bowl afterwards. You compression test should tell you if it's the valves, or the carb that's the culprit. Here's hoping the cheapest fix is the cause of the problem. Steve
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