Want to restore this old leaky stove and have lots of questions. Not sure what is behind front and side door without yet taking them off. Gasket, furnace cement? Flathead slotted screws on door seem impossible to take off as the slots are so shallow the screwdriver doesn't get a good grip. Think I'll have to cut them off from inside. Replacements anywhere? Any advice, suggestions, help would be most welcome. Thanks!