RE: y are my glow plugs going out so fast?
what % of nitro fuel are you running? what's the heat range (hot, med, cold) of your plug? it might be too lean still.
i'm running Blue Thunder Sport 30% fuel with a racers edge cold plug (i forget the number). i burned my first cold plug up within the first tank. i reset my needles and set it a little rich, and it didn't burn up right away, so i tweaked it just a little leaner, and it's been in there for the last 3 or 4 outings.
oh yea, higher % nitro content requires a cold plug. lower % requires a hot plug.