My Dad recently got these glasses, wore them like three times, and now the right leg is very wobbly. I looked at them and they have almost no integrity to stay stiff and strong like the left. They can wiggle in all directions. I tried to tighten them but the screw is as tight as it gets until fear of stripping. My only idea is the spring hinge has something wrong with it. I never had spring hinge glasses before so I am not comfortable removing the leg to see if something has slipped for fear there is like 8 pieces inside that I will never get back in place. Anyone got advice that have done surgery on these? Or is this just a known sad fact with spring hinges?