[Arran]

I have had mixed results trying to repair broken wafer sockets, Canadian Electrohome sets, better results in a 1941 Deforest Crosley, it really depends on how the terminals are constructed. There are two ways you can get a replacement socket, one is to pick up a parts chassis and drill the rivets out, preferably one with molded Bakelite sockets of the right spacing, the other way is to acquire some Russian, Bulgarian, or China made sockets via fleabay, and decipher the metric measurements into Imperial ones, and hope you got it right. Forget about U.S made sockets over fleabay, with few exceptions most sellers seem to think they are made of gold or silver rather then Bakelite, a Ham fest might be another alternative though. NOS wafer sockets are still cheap, but you have to know what your are buying, and as a rule you might as well get a new China or Russian/Soviet surplus Bakelite socket for the same price, which tend to be copies of Eby, Cinch, or Amphenol made sockets anyhow, with the exception of one peculiar design which may have been a Soviet original.
Regards
Arran