Bianchi steerer thread problem

[Harko66]

I have an early 1970s Bianchi Sprint frame & forks I'm refurbishing, unfortunately the threads on the 1" steerer have worn 'thin' in one section (not totally gone).

Is there anything that can be done so that I can keep the forks - rethreading/aheadset - etc?

BTW - Its a refurb not a restauration so not too precious about installing something non-period etc.

Thanks