OK...finally convinced my fiance to try vaping. She actually found a vermilion river juice she likes. Up till now I've been letting her test new juices on my SVP and RSST. To celebrate we went to our local vape shop and I bought her an Ego twist. She wanted to be simple, so I got her some Boge cartos, just drip and vape. Well, she started getting really sore throats. At first I thought she was sensitive to PG. But she was able to vape juices with PG in them before. We were talking today...and got into a discussion about how she latex sensitive, and like a flash it hit me, the insulation grommet in cartos are made of rubber! And we all know how hot those can get. I just gave her a toke off my TOBH atty of some peachwood. The tobh doesn't have rubber for an insulator, it has hard plastic. So we'll see. My question, has this been looked into? Are there any cartos that use non latex silicone grommets?