I think my melamine enclosure (REGRETS OMG) I have for my dumeril's is already warping a bit. I noticed just now that the right sliding door doesn't shut cleanly (it's lopsided), and there's a 1cm gap between the door and the wall on the upper half.
What can I use to fill up the gap and that is easy to work with? It probably should stick to the glass sliding door instead of the wall.