sometimes freak accidents occur...happens with all brands...i have had 5 associated kits, each one have had something wrong with it or parts missing, that would keep the car from driving...i did get a b5m and everything was in order...but then i heard about a bunch of people who where missing stuff or had parts that was messed up (missing threads, holes too small, warped a-arm)
a thing to consider is these buggies take a beating...it sometimes take a while for the damage to appear...so i may have crashed it hard the week before...but its not until 10 batteries later that the damaged part fails in whats seems to minor crash
i have one shock cap that now pops often...i have never popped them off my self...just wear and tear..but now that it has popped a few times, i think its simply done for...tower has them in stock so no big deal