I have a plowmaster 100 (214)  I am trying to get back working. The steel tailwheel assembly(name escapes me) needs rebuilt. Were these just bushings internally, or did they have bearings? I have nothing but the center shaft(basically a big bolt) and the outer cast housing. This cant be right, very wobbly. Is there a plowmaster manual out there? Are there any parts available? I also need need two hubs and rims. These have been changed over the years. 
                     Thanks