The clipons have a plastic nub instead of a proper metal bar end. I'm sure it's great for the track but I want to fit some graves bar ends. I'm kinda sketchy about just pulling the plastic nubs off, I don't know what under it or how I'm gonna mount the Graves ends. Anyone done this before? Woodcraft support said I can try using OEM Suzuki ones that use an expanding rubber piece to hold it in, but I'm not too thrilled about that idea.