I just started up a bowl of AF Apple I got from a local Middle East grocery. This is the third time I've smoked this shisha and I've had problems with heat management with it every time. The first two times I used exotica coals, and now I'm using Coconara coals. It seems that with one coal i get no smoke and with two coals it gets a little harsh. I'm using a 14" Mya chic (my go-to for solo smokes), but I have never had problems with Romman, Fumari or SB getting harsh. Any suggestions? Could it just be a bad batch?