rpenmanparker 

Oh crap, you are supposed to have a safety margin? Good thing I sold that frame, huh? I upsized my new tubulars to 25s and could barely see the space between the tire and the fork crown underside. It's a good thing that I could ride them a lot softer than my 23mm clinchers, because at about 110 psi they rubbed. At 90 psi they were okay, but just barely. Laterally they were always okay. I didn't pay any attention to it. No issues. I hope the new frame/fork has more clearance though.