Does QF have a shelf life i had obtianed a QF from a buddy who works at a smoke shop been sittin in my truck for quite some time (about a year, in the shade) the BATCH # is F4C-09. i see that the green paper says it can be reheated for random usage just wondering due to the fact i live in Phoenix where its hot as fuck so it keeps gettin reheated over n over. Thanks happy smoking :jointsmile: