My friend and I were trying to replace the optical drive in his 15-inch Macbook pro (mid 2010, in case that matters) with an SSD. But we found a screw head that was completely worn down. Tried at least four small screw heads on it, and it didn't budge. Removing that screw is a necessary step in taking out the optical drive. The screw is located here, it's the one highlighted on the right: At this point we are considering hammering a screwdriver into the problem screw to create a new groove - could be risky, are there any fragile components under there? Or we could break the plastic bracket that its attached to, so is that bracket used for anything?