are you stupid? taking care of your bike? it cracks because you ride it, and the stress on the frame makes it eventually cracks. taking care of your bike has nothing to do with it at all. you could keep your bike as clean as you want, regularly greese things, all that kinda stuff.... it will have no effect on weather your frame cracks at all!!
at the end of the day, trials bikes are made to take different kinds of abuse from riding, not made to be "taken care of".
and what i cant get my head around is why do people care about so much weight stuff, what is the difference in weight? like 50g? come on man, grow up, ride your bike and stop being a idiot. its not like your at the limit of trials riding where a few g's make a difference, i dont care about weight, the only thing i care about is having a good strong part.
i have seen far more snapped echos than zoo's. if you think about it, an echo is a thinner, and lighter version of a zoo... therefor it not being as strong.
rant over