The Cinelli I've never had a problem. I had to switch to a shorter stem and just had this 60mm SR stem to use with these mustache bars so I wouldn't be looking like superman riding this bike. lol. What I found is that it's neither. The stem is just a hair too small in diameter for the steerer tube. So it has just space between the neck of the stem to allow some play. The stem is also kind of tall so I have it completely bottomed out and wedge is near the bottom of the steerer tube.

Now I can't decide to run my shifters on the downtube or pick up some barcon adapters. Decisions...decisions.