Threaded Headset / Problems with 1" Headsets

sounds like thread on fork is damaged. Either needs to be re-died (like re-tapping but the other way round) or new forks.

This is what i suspect

And no paint on them they seemed to get paint everywhere else though had to have the bottom bracket re-tapped etc but forks seem fine

and yeh it is a steel headset so it seems possible that it is a steerer issue

thanks for info anyway