The button on my 12th sonic is broken, but I've sourced an appropriate replacement tact switch for it. Has anyone ever taken one of these apart? It looks like the battery housing is a snap-together fit, but I don't want to find out the hard way and break it. If it looks like its too difficult to do without trashing it, I'll try and solder the switch in place in-situ, but I'd rather get it apart. Anybody got any experience or advice on how to get it apart without breaking it? Thanks.