Quill stem won't tighten
I've been working on fixing up an old Trek 930 and I've run into a problem. No matter how much I tighten the quill stem down, with a moderate amount of force, the handlebars can still turn independantly of the front wheel. I thought that maybe I wasn't able to tighten the old stem enough, so I bought a new one, and even with the new one it still turns. Any ideas?