Hey guys need a little help first mech mod i ever had dont really know too mich about it.. I just got the rig mech mod and everything was working fine until i took it apart cuz i was curious to see the parts and how it works when i put it back together i put the battery in and hit the fire button and it wasnt firing the coil but the battery was getting really really hot and even melted a little bit??? Can anybody tell me y this happend?? Also theres a little copper threaded disc that the your atty screws into one side is flat and the other idk but its not flat which way does that go in?? Flat side down?? Or other side ?? Also the battery does go in negative side down and positive up right??