While installing a new1 1/8 Chris King (threadless) headset on a 700c. Marzoochi fork, everything went ok except for the "plastic like" o-ring washer that sits under the bearing cap(not the stem cap). The bearing cap itself was a little snug, but I feel thats how its designed. Anyway, this O_ring seal is actually too small for the stem cap, you would have to really strech it...to get it on, I did, but with a flashlight looking through the little space between the top cup and the cap, the o-ring seal looked "buckled" and seemed to impair a good fit of the bearing cap on the top cup. So, I re-installed stem,cap, spacer, etc.witout the O-Ring seal and everything sits better. Should I leave it alone without the O-ring seal? or give it another go, ( or just avoid wet weather riding,which is already the case).. Will the headset perform just as well without it?