You might want to check that part again. 
Hours gained
Old characters will not gain 8 hours per turn -- the older you are, the less hours you receive. For instance your character may only receive 7 (at age 35+), or 6, and even as few as 5 (if your character is really old). That means there are fewer things that a character can do, or it takes him longer to do them. There are rumours that extreme age reduces this number further, but no characters have as yet become old enough to confirm that.
http://wiki.battlemaster.org/wiki/AgeI got this from battlemaster wiki, the link can be found above.
Hic Sunt Leones,
