A few days ago, one of my hatch struts came loose. I don't know what caused it. We've had a lot of snow and ice and maybe a chunk of ice pushed it out. I propped the lid up with a shovel and slipped the strut back on. What I'm wondering is, is it just a simple ball joint? Is there a lost piece? It seems like it could be easily bumped and disconnected. Has this happened to anyone else?