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There are several things you might consider, first off I don't know what plug you are using but you might want to try one step colder on your spark plug. Here is an excellent article on reading spark plugs: http://dirtbike.off-road.com/dirtbike/ridenet.tech/How-to-Read-Spark-Plugs/ArticleStandard/Article/detail/332655

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16y ago

What else can I help you with?