Roof leaks can be a bitch to find,,, like in a home the leak can be several feet away from where it shows up inside,,, I have seen where water can run several feet down a joice before it falls off !!! I have also seen where I though the SkyLight was leaking,,, and found it to be some thing else !!! Got to check it all,,, sometimes it is a very small opening !!! GOOD LUCK !!!