title: UINavigationItem titleView position
body: <p>I'm using UINavigationItem's titleView property to set a custom UILabel with my desired font size/color. Here's my code:</p>
  
  <pre><code>self.headerLabel = [[UILabel alloc] initWithFrame:CGRectMake(0.0, 0.0, 400.0, 44.0)];
  self.headerLabel.textAlignment = UITextAlignmentCenter;
  self.headerLabel.backgroundColor = [UIColor clearColor];
  self.headerLabel.font = [UIFont boldSystemFontOfSize:20.0];
  self.headerLabel.textColor = [UIColor colorWithRed:0.259 green:0.280 blue:0.312 alpha:1.0];
  self.navigationItem.titleView = self.headerLabel;
  </code></pre>
  
  <p>In the navigation bar I also have a left bar button. The result is: the text isn't properly centered. I've tried setting the x origin of the label, but this has no effect.</p>