Leaky Quarter Windows

[stadair]

My SSP has had to sit outside for the last few months, unfortunately. Now It's got a garage again. My question is about the quarter windows. I think that they leak water into the cabin. I have found water in both rear seat cubby holes after heavy rain. I was thinking that it was coming from the doors, but I have replaced those seals, so it was confusing me. Has anyone else had this problem? Do the quarter windows tend to leak with age?