Join Date: May 2004
Location: Wilmington, DE
Bikes: 1984 Trek 660, 2003 Specialized Hardrock, 2004 LOOK KG386i, 2005 Iron Horse Warrior Expert, 2009 Pedal Force CX1, 2014 Islabikes CNOC 14 (son's)
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First, that's not your crown race. The crown race is at the base of the steerer tube on the fork. The part you took a picture of is your upper bearing cap (my name for it at least) and because it rotates with the fork, it must have a gap between it and the frame. No problem there.
Second, the top spacer is there because your LBS cut your fork too long. In order to not need a spacer on top of the stem, the fork needs to be cut at least 2mm below the top of the stem and sometimes more. With a carbon fiber fork, it is sometimes preferred by installers to not cut the steerer below the top of the stem, as with your bike, so that the stem is fully clamping on the tube. This is assumed to reduce the likelihood of crushing the tube.