Quote Originally Posted by srt8-in-largo View Post
I'd say 75% of the time it takes to check the bikes pressure is taking the cap on and off; sure it's only 10 seconds, but it's 10 more seconds that I can be riding

I never saw a firsthand issue with fake valves... but now I have; nothing serious I hope, Reserve. All the more reason for using some sort of sealed valve cap.
Go to a truck stop with a tire shop and you should find them. You might even talk the guys into giving you a couple for free.