Godzilla/Dinosaur Plastic Hand Puppet - 1998 - Toho - KFC - Not Working

This is a Godzilla hand puppet that you got when you bought a meal from KFC back in 1998.

This did make a roaring sound at some point but the batteries have died and I can't figure out how to change them. There is a screw on the top of its mouth but I don't have a screwdriver small enough to fit in that small gap. It also looks like the screw may be stripped.

Apart from the roar not working this appears to be in ok condition. It's a bit dirty in places, has some marks and missing paint. There is also some general wear on this.