Eze Gutter, how to re-adhere? Double stick foam adhesive?

You might want to look at a high quality automotive trim double sided tape from someplace like NAPA. Another thing to look at may be a auto trim adhesive, there are some pretty strong ones out there that are multi purpose. But they may not remove very well. Around the curve of the window is a very difficult place to hold that, I have also tried to do that with limited success. Maybe a little heat to help it hold its form in the curve might help a little. Hope this may help. Happy Trails Bert