I'm a DIY homeowner repacing an outside toilet pan to a salt glazed spigot in a concrete floor. My guess is to cut through the mortar surrounding the spigot and continue cutting through the spigot. What are the pitfalls and tips to assure a clean cut through the spigot. Further will a plastic pan connector properly fit the ID of salt glazed pipe after the spigot is removed, and what is the penetration depth of the glazed enamel pan connector into the spigot. My concern is having a connector offcut remaining within if a portion of the spigot remains flush at the concrete floor level.