There is only a slight clearance between the main cylinder and bowl body. When the main cylinder is removed, if it is only slightly inclined, it can no longer be withdrawn. When the handle resists, do not blindly continue to rotate the handle. Each time the handle resists, strike the top of the push bolt with a hammer, or temporarily back it off. By so doing, withdraw the main cylinder little by little. (Hammering will correct the inclination of the main cylinder and will also eliminate the eccentricity of the tool.)