Sorry I didn't reply sooner.
On my 32RLS, I also do not have springs as shown above. My screens run in a channel on top and bottom, or each side, depending on the window install. To remove the screen, I slide it toward the end, past the end of the channel, being it slightly outward to clear the frame .. then slide it completely out. To reinstall, repeat in the opposite. I needed to gently, but firmly distort (bend) the screen, without getting too rough and putting a crease in it. Tried it a couple of times and I didn't screw it up. I don't see any other way of doing it.