Flipping the stem.

senoj Posts: 213
edited February 2012 in Workshop
Just tried to turn my stem,I have undone the nut to much and the top of the headset has come apart.
There are 4 shims in between two chamfered nuts which squeeze the shims to tighten things up I suppose.
How the hell do you get them back in the fork steerer?its an fsa on an 2011 caad10..Thanks