Spotted...

What I run isn't really important (I'm on 48/19) but it sounds to me like you just need to spin more, not gear up. I don't know what 'bother' you are having on the Col du Pentonville, but I can hit 34/35mph on 48/19 so you should be able to go north of that. It's a 30mph zone anyway ;)

The fact of the matter is that I get faster averages when i ride on my bigger ratio I don't plan on riding fixed regularly for any more than a few more years, every one knows road bikes are really where its at.