My '76 fuji trackbike's headset has what I assume is brinneling, "index steering", or whatever. I replaced the old bearing cages w/ free bearings and fresh grease:

but that didn't help much. The headset is a tange falcon.
A new tange falcon has a race fitting of 26.4mm, and a stack height of 35.3mm. Same as my old falcon?
Could I use a tange LEVIN headset w/ 33.3mm stack height + a spacer?
Or should I remove fork and take it all to a shop and let them tell me what to get?