I wanted some imperial ends a couple of years ago. I rang BICC and a very nice man sent me what I wanted f.o.c. !!!! also sent me a comparison / conversion chart...wish I could find it now. It is only usually the pots that are the problem [I believe they are a twin start thread] Glands you can just drill out with care [and a few spares to hand] I've still got plenty of imperial ends, and sometimes still use them!!!
