This wouldn't surprise me. I don't take my caps off often, but when I do, I have learned to be careful re-installing them. It is very easy to think it is on and still have them leak. Happened to me at least 3 times in the last 3 or 4 years. That's why I never do this on the day of departure.
Originally Posted by FlashG
He claims the leak was from my Pressure Pro cap.