I had same problem re Sorry we don't have a 1" fork thread tool anymore , so off i went to a very traditional shop and less than 5 minutes later its sorted
Thanks @Jonny69 it's fairly short and was originally someone's tt bike then it was used for a triathlon and training before being buried in a garage .
Aero style levers
Looking forward to doing some miles on it for sure , would just be nice to find who made the frame