When I got mine from PlanetX headset also felt gritty, so stripped it down
and found the grease in the head tube and on the headset was covered in
shot blasting grit.
the threads on the fork did not have the vertical slot cut into it , the tab on the headset washer was cut off instead.
the seat tube top lug was out of round so fitting of the seat post was difficult
and there was a few runs in the clear coat.
apart from that its a nice frame set.
So quality control issues then ;( is a threaded headset without a slot bad news in itself or a sign of costcutting, or is it of no consequence??
Any more info much appreciated before I commit to a build??
Colnago Super, C record Delta 7v,
Olagnero Signature Model, DA 7401
Battaglin EL101 tubing 8v
Wilier Campagnolo 8v Record
Daccordi Furioso, Campag Veloce 9v