had a 3300 stick pack blow up in a customers car the other day. First one I ever saw. Not to bad of a deal. made a good sounds let out some smoke and sputtered. threw it outside called it a day in the hobby. We blew up 1200's 2000's and will always have a occasional issue. cell phones blow up in pockets, laptops catch on fire. it is just a occasional risk that happens to go along with the hobby we play with.