My boy used to do the exact same thing, I was sure he was going to cook himself but no harm ever came of it. All the same I rectify the situation as soon as I could. As mentioned above my problem was that the weight of the panel was producing a bit of sag in the ceiling of my cage, since I use a plastic tub I had screwed into a piece of wood on the outside for a firm purchase, I just replace it with a longer playing so that the wait is more evenly distributed across the tub and not pulling just on the center. worked like a charm.