John Carbo was a wonderful guy. He went on to be a film editor for CBS TV in Chicago. Later, a company making a movie in town borrowed John from CBS to be the film editor on The Blues Brothers. He taught banjo at the O.T.S.O.F.M. for many years. Both 5-string and 4-string plectrum style too. Johnny Carbo passed away about a year ago. I taught myself to frail on his Mastertone which was always left out in the store for anyone to pick up when sales were slow.Art Thieme