What's wrong with the present batch of plugs?

I think the main issue here is we're trying to push every last millivolt into whatever plug is being installed and hence the blown plug. I've had an old cheapo Fox 2V (no idle bar) plug starting my RAM 750 for over 50 starts and it still looks the same, and have tried MC-9's, OS-8's, OS A-3's, and Enya #3's (just to see if there was a difference) with success. My JetCat has lit off with an OS-8, and MC-9 so far. When my helo's no longer run well with the expensive Enya #3's, I'll retire them. They should then work fine as the Iridium that wears off in the plug is not required for turbine duty just a hot enough filament to light off the gas mix.