Just a word of caution, Torps:
Messing with fr_ratio has some side-effects, such as breaking the alignment of the deck gun and other nasty stuff. Don't remember in which thread I saw all this, but it came from Leovampire, and I trust his word. He strongly suggests not to mess with that value.
ETA: Found a similar thread that mentions the drawbacks of messing with fr_ratio
here.