I want to replace the little red star wheel pad contact adjustment knob on my Juicy 7 Carbons (it is on the lever). These are old brakes, but I don't know exactly how old, since I bought them used. The model I have uses a plastic knob. In the later production years of this model, they started using aluminum knobs instead of plastic. I can order either online line but would prefer to use the aluminum version, if it would work. They look similiar, but that is just me looking at the online picture. So, has anyone out there made this switch? Will the aluminum version work or must I use the plastic one as a replacement?
Also, when I switch out the knob, does that break the system seal and mean a bleed will be required? Can I just unscrew it and screw in the new one with out a bleed?
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