I've had a 055 for about 6 years and never had the bang until today.
Was smoking about 4 slabs of loin backs and put in about 6 oz of - - - wait for it - - - hickory. Had the temp set to 250 which is higher than I usually go.
The smoker sits on a back deck, right outside my office window. BANG!!! (and the dawgs started barking) I looked out the window and the whole area was covered with a haze of smoke.
I didn't immediately go look at the smoker but seemed to me there very well could be some bulges in the sides. Not so.
But it was an experience!!