I installed this unit yesterday and it was working fine. Last night after my light were on for about 5 minutes I smelled a burnt plastic smell. I realized the bulb on the temperature dial was melting the plastic housing and quickly pulled out the bulb, but it was too late. It had melted the entire mounting area and housing. I removed the unit today and realized the same thing has happened, but to a lesser degree on the opposite side by the fan speed selector switch. The two in the center are fine. I remember the center bulbs seemed to seat better in the center mounts then in the outside mounts, but even though the outside ones, especially the one on the dial side had some wiggle room, I never expected this to happen. I have attached pictures of the damage. Have you guys seen this before? I used 2723 size bulbs, clear ones in all slots... those are the correct bulbs, right?

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