Originally Posted by
cyccommute
Perhaps a silly question but did you remove the wedge on the previous stem or is it still stuck down in the steer tube?
+1 Indeed, that sounds like it may well be the case especially when taking
Originally Posted by
Fumbles22
...when I twist it to the right, the stem pops up a bit before my downward force pushes it down again.
into account.
This sounds very much like the bottom of the new stem is coming up against the surface of a liberated wedge.