Hi Bonnar Bloke,
You are a real Jewel in SA. I took your advice and contacted Steve Rose at Pooraka and he had the part I wanted even though he took it off another S B machine in his workshop. He is an absolute font of knowledge regarding cylinder mowers and has a lot of second hand spare parts and screws for S B machines. He knows you but not by your internet name, and he passes on his regards,.Thank you once again for your help and also for this forum for the fountain of knowledge it contains.
Regards Bazzo