I was sitting in my new home with dimmable recessed incandescent lights when I noticed one light fixture "click" off and then 10 minutes later click back on. Then the fixture on the other side of the room did the same thing. I put my hand on the ceiling next to a fixture and sure enough it seems quite warm.

OK, so they're overheating... but why?

• One bulb is a 40W A19 bulb and the other looks like a 45W R20.
• The fixtures are Elite B4IC-AT-W with B401W/WH trim, which the spec sheet says "Accommodates up to 50W PAR20, R20, and A19 lamps."

Are they installed incorrectly? Should I just replace them all with LED (or CFL) bulbs and not worry about it?