I have a 1960 Sears Elgin Boat Trailer model #254-61500. I use it to carry a 1960 aluminum Starcraft fishing boat. The problem is it has the original rims which have only 1 lug nut. The rims have the bearings packed inside of them. Because of rust I need to replace them and nobody I have found carry that kind of rim anymore. Does anybody know if that is true and if so, is there anything I can do besides changing axles?