I have a SodaStream One Touch which I used for about a year and a half without any issues. I even fill the CO2 cylinder with an adapter I purchased on Amazon. A few months ago I started having issues with the cylinder unscrewing itself while making seltzer. I contacted SodaStream support and they had me make a video of the problem so they could evaluate it. Once they saw the problem they sent me a replacement unit. Unfortunately the new unit is doing the same thing. I tried another CO2 cylinder to rule that out and it does the same thing. Has anyone else had this problem and possibly know how to fix it? I loved the machine before it started doing this.