I have recently aquired my first o/b. - 1986 (approx). Evinrude (or omc, it has a new cover) - 4hp - 2 cylinder - 2 cycle. originally a saddle tank, now remote. Model no: BE4RCUD. could be an 'excel'? It runs great, but my local repairer tells me this model is prone to seizure, although due to its age, I assume it would have done so by now, if its going to. all info and advice appreciated, thanks in anticipation --- Al, (England).