Yes, bit worried about that. Could take a few mil off the nut I suppose.
2 other questions ...
1. Does the cable from the rear light go through the mudguard or over it. There seems to be a mixture. On the bike I haven't started on yet it goes through, on some photos, over the top. Which is it?
2. On your 2 pounder Anti Tank gun. When you fire it there is a bowden cable arrangement to close off the sight. How is it connected at the pedal? Is it a nipple or is it just clamped on with a screw? And is there a lubricator in the middle of the cable?