oh and i forgot to mention, i've had several autos break, snap and fold over at their main stem. when i see it, I tape them up and they usually become the strongest of the bunch, and in many cases yield the most. so for someone to just generalize something and say NEVER EVER EVER DO IT is absolutely wrong. for some strains and situations you will absolutely need to top of fim an auto. if you do it right, it causes minimal stress that will ultimately help u out immensly