Hello

I was replacing the headset today on my 1980 Fuji America.
Old headset was Tange Falcon, JIS (30mm x 27mm). New headset in Tange NJS JIS, same spec (well, it is about 1mm taller, but I hope it will work fine).

Cups went in without a problem - smooth install. There was some pressure required, but it was not excessive and cups seated very nicely.

Not so much with crown race.

For the life of me, no matter how much I pound on it, it would not get seated. Inner surface of the race measured about 26.9mm, outer surface of the race seat measures about 27.1, and does not have perfect surface (some chrome chipping, and there was a 'ring' halfway down the seat, most likely from previous installation).

After I cleaned up the race seat with the file a little bit, on next attempt race went a bit deeper. Still, it is about 2mm from being seated.

In order to drive it I am using short piece of PVC tubing that is of perfect size. I support crown underneath with 2x4 set vertically, and hammer away on the PVC tubing with rubber mallet.

I am really hesitant to apply even more power to make it seat.

Should I take it to the bike shop and have them mill/face the crown race seat a tiny bit smaller so that it fits?