I have recently bought a 2011 Lunar Clubman SB which has a sliding bathroom door. There is a bolt which fits into a block on the ceiling to hold the door open when travelling. Mine releases very easily, allowwing the door to slide. After meeting someone with a 2012 model, I was told this was a known problem, and that Lunar had changed to a conventional door for 2012. Has anyone else had this problem, and how did you fix it? Thanks in advance for any suggestions.Paul