better planetary gears

[stampy]

ive got a rustler and I keep killing my planetary gears. my trucks not to crazy its a 3s lipo lehner xl3600 with a old quark 80b, and im running half bald standard 2.2 gladiators. ive got a flm tranny case stock steel top gear, alum idler gear with a stock plastic diff gear. I was thinking of running the pro diff kit but im afraid ill just spin the gear with out spinning the outputs. any body know of a better setup?