Hi, I am having a hard time finding a clearomizer that's mouth piece is not made of steel, I like the glass clearomizers, but it seems most I find for my istick 20v have steel. I am soon going to upgrade to a 50v but for now I am really having issues with my front teeth and tend to from time to time hit them a little and they are sensitive as it is. I am very new to vaping so I am not yet up to the rebuilds when I get better at this I will but till then this is what I am using.. any ideas will be helpful ... Thanx