Bill, it's not old age stopping you from putting the headlight bulbs in. It's super tight behind the headlights for sure. I can, usually, get the passenger side out and in easily enough, but I usually have to remove the air filter box in order to get to the drivers side light.
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong, it usually turns out to be impossible to get at or repair."
-Douglas Adams, Mostly Harmless