I was changing the wicks on my wotofo bravo rta yesterday. Hoo boy did i almost wait too long. The wicks and coils were scary to look at, lol. After i cleaned everything up, primed the new wicks, i put the bubbleglass back in place and proceeded to attatch the assembly to the base. There must have been a tiny crack because after i tightened everything, a large crack appeared the whole length of the glass. Ive got spares but they are the smaller ones, only one larger capacity bubbleglass was included. Now im on the hunt for a replacement. I put in the spare without missng a beat, but i can sure empty the tank in a hurry now.