At a desperate time I imagined facing the headtube on the frame down until the dud threads on the fork were completely dodged. I'm not sure you have enough head tube for that though.
you wouldn't need a frame builder, any metal worker could do this. its basic stuff. if you're prepared to get your hands dirty you could do it yourself.
Right ok! I’d need to find a frame builder for that then
Forgot to post a pic last night:
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