Last night I needed to loosen my handlebars as they were slightly out of alignment with my front wheel as a result of an accident I had weeks ago but had never gotten around to fixing. I wasn't thinking very hard and first loosened the handlebar quill before I realised my mistake and loosened the handlebar grip instead . I tightened them both up, but on my way in today, I noticed that the headset seems slightly loose and can move slightly back and forwards, which is most obvious when I brake. The quill seems tightly done up now, so what have I done? Is it easily fixed? Does this mean my balls have turned elliptical?