I just open my Samurai gearbox and found 3 less teth on input shaft pinon gear. Did you see this before? did happen same to one of you before? Should I expect same fatigue for all gears or this part usually fail?

are you having the same kind of problem that Spencurai is ? are your gears the calmini ones too?
http://www.pirate4x4.com/forum/showthread.php?s=&threadid=84963