av8tor, got one here doing the same although not quite as bad. After the second or third start it will continue to run and just as on yours, with an alternate ignition it will run flawless never dieing. It never misses at higher throttle settings although it will sometimes die on taxi-in just as if you had cut the switch. One flip and it's running again. It's over 2 years old and since it never dies in the air I have just continued to fly it and it never seems to change or get worse. I haven't tried the 5 cell pack as Terry suggested, but that's next. Thanks for the suggestion Terry.