I received a 1979 Motobecane on Friday. While reassembling the bike, I noticed the top bolt on the stem doesn't connect to anything... it just drops in the hole and moves around. I took the stem back off and the hole is wide open all the way until the brake bolt. I've never done one of these before so I don't know what's supposed to be there. Is it missing a part?
This is the bolt I am talking about: