Hello. I have taken out the old battery from 1999 in my copy of Pokémon Crystal Version. I am not quite sure how to get the new one back in. I tried using tape, and it didn't hold a good connection or save file. I was thinking about using a soldering gun to help the arms stick to the battery. So what am asking is, is a soldering gun a good choice, or should I just give up on Gen II Pokémon?