Hi, we have a fleet of HGV's which have virtually vertical windscreens, cameras are all set up and working well apart from one problem. When the drivers clean their windscreens they have a habit of hitting the camera's which then moves the lens to the maximum upwards position, maybe they don't notice doing it but regardless they never bother to realign it afterwards. It still works better than nothing but cuts off a lot of important areas of video. Is there a way to lock the lens in place once you have it set to the correct place? Or any DIY hacks that could solve this problem? Thank you.