Did a 5k/30k duathlon this morning. So in memory of the dumbass do-as-I-say, not-as-I-do coaching mantra, I raced on brand new wheels without riding them previously.
Zipp 404’s, my third set. Thought I knew all about them since I’ve had them before.
Well the valve extenders are different and the rear one wasn’t on quite right or something. I noticed this at mile 9 on the bike when I was busting my ass, killing myself, suffering, and my damn rear tire was about 40psi. It just slowly let the air out so I thought I just sucked. A couple of people passed me and I thought I must really have done some weak training as this was my first race. Then a friend rolls by and points out the lack of air in my rear tire.
AWESOME!!! I don’t really suck that much ass this year, I was just giving everyone else a chance to win or something 
With only 10 miles to go to the finish, I just filled it with co2 and finished with it at around 70 psi. I’m a dumbass.