It sounds like the saw is probably fine and the carb is way off. Can you post a pick of the chain or the chips it makes?When I try to post it message says file is too large. Bottom line when it idles it's rough and after use ,when it gets warm/hot it stays at a high idle after the cut sometimes higher than others very erratic. Usually a couple pokes on the throttle and it idles down but still rough. The warmer it gets the more it happens. It's pretty strong in the cut at wot. I checked the plug and it's brown not gray . Originally before the seals were replaced it would not idle down until it cooled off
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