Happy New Year to all.
Having failed to get fully enclosed chain guard for my 1961 Golden Flash I resorted to buying a chaep(ish) one from India. Ok with only two predrilled holes, I need to drill some holes but at least I will get the holes to align with swinging arm brackets. At the front of the chain guard there is two bosses one threaded. These almost align with the hole in the frame above the swing arm. See photo.
Before I get drilling, so I do not end up with a chain guard that looks like swiss cheese, can anyone tell me what these bosses on the chaingard are for and do they need to align with the holes in the frame.
John