Hi, I'm rebuilding a Roch. B carb and the exploded view on the instructions show the fuel filter separating from the fitting and gaskets. The view provided is of a "BC" model. My filter won't separate, at least not easily and if I force it I'm afraid it might break. And I can't find one anywhere on the internet, not one in the rebuild kit either so I definitely don't want to break it. Also does anyone know where I could get an air filter stud, and period air filter for it? Thanks, Brett