I ordered/received 4 boxes of Volcanocigs Clear XL Cartomizers, 2.6~2.8 ohm, (somebody on another thread dubbed them Clearo's, and I love that). I vape 50/50 or greater % VG
Cinnamon. I've had no cracks in my Clearo. I've been vapin and a fillin the same Clearo for more than two weeks. I DIY my own juice. Not a hint of a crack in my Clearo. It wicks well enough to keep up with my constant vaping. (It does wick better held horizontal or batt high). Only thing I've noticed. . .it seems to be a juice hog. Either that, or I'm enjoying it so much I've increased my vaping by 50%. I used to vape 2 E2 XL's a day. Now I find I'm well through the third. I haven't had any trouble filling them with the plastic syringe tip at all. In two weeks I finally bent one tip bad enough I switched to a new one. The Clearo tube is now spinning on the connector, so I've switched from using my ProVari to a Riva batt w/cone to help trap leaked juice, should it start leaking. But, so far no leaking yet. Maybe I'm just luckier than most. JMHO
Cheers,
otrpu