I have a DW-004 that needs a new battery. I changed out the battery in my old 6900 the other day without too much trouble. Turns out the screw driver I used is too big to open the 004. Should I send it back to Casio and let them change it or try to buy an even smaller set of screwdrivers and try it myself? Anybody sent one back to Casio? Is is affordable? How long does it take? If I am going to fix it myself, can anyone recommend a screwdriver set? Also needs a new band. Where could I order a band for the 004 from? Sorry for all the questions. I am just excited by my new obsession. Now excuse me while I go stare at my new GX-56.