Same cause here, and on a rainy holiday night in Rocky Mtn NP, pulling out the screen was certainly the best option (I had left the window unlatched). Now I have spare keys hidden. Actually, that screen had begun coming loose at the lower corner on our first trip after delivery - the spline was not well seated and wouldn't stay put. I had taken a photo and sent it to my dealer. He thinks that he may be able to replace it under warranty - we shall see. I'll let you know how it goes.
I will be inclined, if they have to remove the cabinets, to have them leave out the top three screws in the screen frame such that I can more easily replace the screen myself. With the ease of leaning against the screen while seated at the dinette, I can see future screen replacements as a maintenance item.
Joe & Joan Donnaway