I ordered a new-to-me set of Zipp 404s to replace the set I had due to the rear rim appearing cracked.

I had noticed that the tire on the front, a Vittoria Corsa Evo, had gone flat. I assumed it was due to leaking around the valve stem, since the tire held air a couple weeks ago. (I've noticed that sometimes, the valve extender loosens allowing air out.). Anyway, I pulled the tire off last night, and put it in a tub of water to verify where it was leaking. Turns out the damn thing was leaking like a sieve. There was so much air bubbling out or it, it was ridiculous. There were bubbles coming up almost every inch along it.

The tread is still good, so I may send it off to be repaired. Or I may just say screw it. I prefer the valve set up on my Continentals anyway, and I bought about a half dozen tubulars at cost when my buddy was shutting down his shop a year or so ago. They are mostly Conti Sprinters and one set of the Vittorias one step down from the Corsa Evo - they are still Corsas though.