Guys, unfortunately, I'm confirming the melted black rim plastic on both my regular polyimide caps and glass caps that I received Thursday and of which I have used now 3-4 times. This is so unfortunate after patiently waiting for so many months to receive my unit. Check out the links to a couple pics I just took.
http://tinypic.com/r/mcq8af/8
http://tinypic.com/r/2nai9sy/8
As for the charge time issues, I have not experienced a long charge time and my batteries seem to get 7+ sessions at temps of 7 and higher. I purchased 3 extra batteries and a battery charger from Amazon that can charge 4 batteries at once. As for swapping them out, if done carefully, it's very simple and quick. It's too bad something as simple as using another material that can withstand higher temps for the lid/chamber cover wasn't considered!!!
@Inhalater please help!!!
Edit: And yes, that's black plastic below the rim and now touching the top of the chamber! I'm so upset!!! And to comment on the glass caps, they suck IMO. They come with a small screen that's loose and falls right out so being that this was supposed to be my portable traveling vape, I've Ben using the glass cal without the screen knowing it will get lost anyway. I grind very fine so I've been eating some a bit hence my statement if them sucking. Too bad they are not designed similar to the Solo stems...