Eggs-actly. Avoid the wet-slug style tantalums when buying replacement caps. Nearly all caps you will find today are solid, but there are some of the old wet types in surplus catalogs.

I picked up a bag of 47uF / 16V caps in a surplus store last week and when I got home, I happened to notice the date code - 1989. D'oh! Great idea, Henry! Replace a failed 20-year old cap with a "new" 20 year old cap? I think not! :I