Sorry Jon, I forgot to insert my <sarcasm>
Unfortunately it's not a smallcap, it's an "almost microscopic" cap</sarcasm> tags.
So, that being said, and after doing a bit more research on the problem:
In the forum's opinion(s), would I be better off to (a) disable font scaling in calibre, or (b) to change the font sizes from a base size=12.0 with the calibre- wizard "defaults" (7.5, 9.0, 10.0, 12.0, 15.5, 20.0, 22.0, 24.0) to something like base size=12.0 (9.5, 10.0, 11.0, 12.0, 15.5, 20.0, 22.0, 24.0)