Just installed a threaded Campy Record headset tonight. The cups went in fine using the proper tool. There is one small section (90 degrees on a 360 degree circle) on the bottom race that I can fit a .010 feeler gage between the cup and headtube face. Is this okay to leave alone or should I remove the cup and have the headtube faced.
Bottom line: Is there a tolerance for gap between the cup and headtube. Being an engineer, most things in this world have a tolerance but maybe we need zero here.