I bought the stubby xray as my first billet style mod. I really thought I'd enjoy the stubby tank, but I don't at all. So, I've bought a mission orbit, veepon tita and the vandy vape kylin tank. I've noticed that once my battery percentage drop to about half or two thirds full, I start getting voltage drop pretty bad. Well, I'm not sure it's voltage I just know it starts hitting way weaker than it was. Its way more noticeable on the kylin I figure because it's mesh and I'm using higher wattage for it. I was just wondering if it's normal or if the block adapter you have to use for a normal size boro tank is the cause. I mean I had a voodoo drag x and I could use it at 80 watts all the way down to the cut off voltage and never noticed a voltage drop or anything. So, I know my battery's should be able to handle. Molicels p28as. I'm thinking it's gotta be the adapter because I also had a 510 adapter for the drag x and when I used it I noticed a huge loss in power. Idk but I really wish I had gotten the stubby 21 or the pulse aio! Any help would be appreciated. Sorry for such a long post!!