I've been working on the install of an integrated threadless headset on a carbon fork w/carbon steerer tube. The headset came with the fork; seems to be the right size because it fits nicely into the integrated races. Crown race, compression ring are seated properly & I've left a gap betw. spacers & the top cap. This is not the first headset I've installed so I know it's not very difficult.

However, try as I might, I cannot get the play completely out of the headset. It seems that the plug is not able to tighten up the compression enough to eliminate play.

Does anyone have any suggestions? Is it possible that carbon spacers or my stem is binding up the steerer tube so that the plug/cap can't work to compress?