Mike, The Seawind does not have a "CG Range" it has to be balanced exactly where GP specifies (Dry)
I had to add 22oz of lead to the nose and that was WITH the battery pack in the nose as well (See attached pic)
I should mention that I omitted the nose wheel assembly which accounted for some of the additional weight needed.
How did it fly? It's the best seaplane I ever flew!
Here's a link to the review, check out the video:
http://www.rcuniverse.com/magazine/a...article_id=723