I've had a few spark blow-out issues too, usually at the dragstrip in top of 3rd / 4th gear when she's making steam. Swapping new plugs in with fresh gap at ~0.026 always fixes me up.
Car usually sees ~32-34 PSI at the strip, sometimes 36 if its real cold outside. Because of this issue I'm always forced to bring like 1-2 extra sets with me and tools to swap it out lol
Would be nice to get a little more lifespan out of plugs, between street driving and dragstrip use, I don't get much life out of em lol