a warm greeting to all members, about a month, I read from time to time many items, discussions as a guest user, But now I need your help, My uncle has a Singer 307G2, very old machine the arm shaft belt is broken, a catalog I found the code of the article cod. 506726 I have written to many (at least 30) in England, France, Italy and some in America no one knows how to do, the replacement is not available I have not yet seen the machines, but I realized that the belt should be so: you suggest a solution? change the pulley, to mount a different belt? how to find compatible? then the machine will be out of phase? I am in your hands soon, greetings (I'm Italian, sorry for my english)