yes, cause the glue is what keeps it watertight, without it water can get into the holes and cause the core to rot causing a pull-out.
A #3 screwdriver is a Phillips Head Screwdriver, it's just a size. A "normal" phillips head is usually a size 2, you usually need something bigger or you risk striping the screw head making it next to impossible to take the binding off. It looks like a regular phillips head, but the tip is flatter and wider.