If you decide to rebuild AND you still want to keep the smaller form factor, I would also recommend you look at the Taifun GS. I use mine quite often, even on the larger battery mods. Not going into the build too much, but I'm using 2.5 ohms, cotton wick, and SS mesh feeder tubes to the tank (best build on this thing). Great flavor, great hit, great vapor.
20 bucks for a clone is a really good price for this atomizer. IMO one of the best performing small form factor RTAs available.