Hi, first time poster here -- I am going nutty trying to deal with my rear wiper blade - I cannot seem to get the correct replacement for it. Even ordering on Bosch's website, the recommended replacement doesn't really fit (opening too large), although it will go on. But if I lift the wiper arm, the blade will just fall off, doesn't snap in place nicely like the oh-so-easy-to-replace front wiper blades do. And going through the car wash, it is guaranteed to come off, and someone has to go back and retrieve it. It's a brand new arm -- could the fastener at the end of the arm possibly be broken? Something is just off about it all. I am stumped, hope someone can help. 2008 Mazda 3 GT hatchback.