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  1. Monkey Wrench

    Needle settings .21 force engine

    No, that's not necessarily true @Deku . The engine's manual will recommend a fuel with a certain percentage of nitro and oil. That's what the stock needle settings are based on. For example, i am breaking in a new Dynamite .21. Needle settings are 3-1/2 out on the HSN and 1-11/2 on the LSN...
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