On my 1958 Hetchins I have a steerer tube dia. and stem dia.compatibility. The steerer tube inside dimension measures 21.9mm and a Cinelli 70's stem is a 22.2 mm. So what is avaivable that looks great. I could prehaps cut down the Cinelli to fit not dong the finish any good. Help I like to get the Hetchins together soon. I tried a search on CR Main but it doesn't work on my computer. Not a good idea to ream out steerer tube. Charles Nighbor