damn, hey good job learning how to maintain your own bike.
well, nothing really similar but I went to the bike shop a few weeks ago and bought a Slime digital presta pressure gauge. I was having trouble using it, so the guy showed me how to do it, pumped it up and everything was great. Then right as I rolled into my driveway, I got a pinch flat. In my driveway. It sucked, but when I returned a few days later the bike shop replaced the inner tube for free because it was a manufacturing defect covered that caused my inner tube to pop. Happy ending, eh?