Karen,
Has the drum been removed to check if it's the axel seal or possibly the brake slave.? Could be either. Is your master cylinder fluid level down? The brake shoes may be saturated in either case
Karen,
Barney Gaylord offers wire wheel hubs are the same as disk wheel hubs but with different length studs. If you actually need a hub I have early disk wheel hubs that may not have the "O" ring that yours normally has. I think adaptable in a pinch.
Jim
