Bought a Nickel Copper (German Sliver) Andre Peron France Bb clarinet for the experience of repair. The body is 1-piece, metal barrel and mouthpiece. The barrel to body joint seems to be built way too tight to have cork. One wrap of cloth tape on the body where the cork belongs and the barrel fits over tight. The body has circumfrencal ridges, the barrel ID is smooth, so the tape has a series of tight "rings" that seems to seal correctly. Has anyone ever heard of a non-cork joint? The ID of the barrel is 17.0 mm (0.670") and the OD of the body joint is 16.45 mm (0.648"). In other words, I'd need cork that is slightly over 1/4 of a mm (0.011") thick after sanding.