Ta for the comments all
Not sure what tubing it is, either Tange or Fuji, but yes, chroming can cause issues, this one seems OK tho'
It does feel just like a tight headset, but it isn't!
A couple of things I am going to check, both cups look to have pressed in fine, but I wonder if the sealed races are sitting correct, or wether the steerer is bent, but I would have thought both would have shown with a waggle of the bars.