I have just made a worrying discovery with our new purchase. I appear to have a leak from somewhere. The water is finding its way between the top bunk floor and the panel just above the cab. As a temporary measure I have drilled a small hole in the panel above the cab to let the water out. If the weathwer holds this weekend I am going to try to take some of the bunk floor up in an effort to see where the water is coming from. Also I'm going to have a go at sealing all joints and window frames up. I just wondered if there were any common problem aresa I should be looking at??