Battery replacement instructions for Ensoniq SQ1 Plus

I've tried to replace this battery. It's a job everyone says is simple. But if you don't know HOW to do it, it's not even possible, let alone simple. I had to practically take the whole thing apart just to get to it, and while removing the old battery accidentally tore off the top contact/holder. Can anyone tell me HOW one of these batteries can be removed easily, and how a new one can be installed, easily? I've looked for a music store in my area where someone could do it, but none of them claim to know how. Please help... - Jim Vlahos (vlahosJim@Hotmail.com)