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  1. !!!HELP Yosh RS-2 Spark arrestor endcap does not fit?!?!

    Tech/Setups for Supermoto
    I have bought a quiet insert for my Yoshimura RS-2, and the flared out circle part does not "slide in" as Yoshimura says. It is not going in without grinding. I am TOTALLY assuming I have gotten the wrong part, but it says right on the packaging "RS-2". I know the endcap is on in these...