Yeah, that is a bummer to hear. I'm surprised, because the 510 connection seems a lot more solid on the 50 watt, it is spring loaded so it should not have any of those issues. So far so good with my new iStick 50, and I can still use the 20, it just gets annoying. With the iStick 50 though I am worried more about the issues I have been hearing about autofiring, etc. If this device gives me trouble in less than 6 months it will be my last eleaf, joyetech product ever. Problem is, the guys on youtube reviewing these things use them for a day or two, the tell us how great they are. Or they might even use them for a few months (I know Gimm Greene does) but they have so many other devices, we have no idea how often they are using them. I think the SX Mini and Mini M look great, but I really don't want to spend $200 on a vaping device. You can get a mech mod clone for like $30 or at the most $50 that will probably work wayyy better than these regulated mods. So far with my 50 watt, (and I wrote 88evape about it, they never responded), I've noticed that the firing button can lose pressure or power really quickly if you don't hold it down really firm (could just be a PWM issue, not sure). Plus it sometimes switches to Volts instead of Watts when I don't think I've hit the button 3 times but that has been rare. I have barely had it a week and been dripping on it mostly with a Doge clone.