Cleaned my solo stem, made bad choices, got a tissue stuck in it, hubby was able to fish it out even with it being saturated in iso lol. Hits completely different, this thing is dangerous when freshly cleaned since I've gotten accustomed to having to really suck on it to get any results and even then the vapor flow is super restricted. Took a few huge lung hits and then realized I only had 2 hours till I have to get the kids and I was vaping on the WTF. I broke the other stem and always forget I need to clean it until I go to pack it and by then its usually too late.