I just inspected one, and it is a tight, jam-in fit in the deep slot. I couldn't persuade it to move along the slot with light pressure from a piece of rod. I'm used to them being fairly tight in there. You might try to slide yours along and see how far it will move toward the breather port. The compartment slot curves around in that direction, and I doubt the screen will be able to curve enough to move along, but if it can, I think you'll need to replace the screen.
