So I just purchased this kit. Stupidly I did not realize it was a sub ohm tank ( I'm not a fan of sub ohming). But that's a different post all together I suppose. So without getting off topic, I've been trying to lock the resistance of my coil (as instructed in the manual), but something isn't seeming right. It tells me to push the fire button "up and down" simultaneously with up & down buttons, but when I do this it just fires and keeps changing voltage, obviously, bc essentially that's what Im telling it to do. Any help? I know I shouldn't let the coil get hot b4 locking in the resistance, but when it keeps firing during this process my coil obviously gets hot & it's going to get an incorrect reading. So am I just doing this wrong or have it misinterpreted the instructions all together? So far I haven't the "lock" sign displayed on the screen as im supposed to. It doesn't lock it all. How do I lock coil resistance?