IF your going to get into any rebuilding, get yourself a little Squid
rda. Its a mini version of an octopus
rda. Get that, some 30 gauge kanthal and an ohm reader and your little ego battery will really shine at 1.4 ohms or so compared to what your using. Or if you feel like getting more into it, you can rebuild those evod
coils, but it requires some youtubing to get it down