I've noticed that some...
I've noticed that some people say that the piezo igniter performs excellently, while others say that it doesn't work well at all. My igniter sparks consistently, but the flame has never caught. I've tried with the gas a little and a lot open, but have gotten nowhere.
Could I be doing something wrong? Could I have just gotten a bad egg?
As long as you have gas & a spark, the electrode is either too close or too far away from the gas source. Very carefully bend it in or out until your stove lights with the Piezo ignition. You won't have to bend it beyond .5mm in either direction. I had the same problem with an MSR Superfly & performing this procedure fixed the problem.
Before I got a chance to tweak the electrode, a coworker suggested I put a pot on top of the stove before lighting it. I did, and the igniter works every time.