Not to nitpick, but were the boats' props really that crudded up? And the props are rotating backwards... They are on the right shafts with the right pitches, but the shafts are spinning the wrong way (just like vanilla). Anyways, nice work on the model/texture, hope we can find a proper fix for this problem...
Oh and someone mentioned 5-blade props on some Balaos: The post-war Tench class and some Guppy converted Balaos had 5-bladers, not the wartime boats.