Mike & Matt:
I am in the process of converting my Akula to a nearly-static diver using a pump system. I have sealed off the area below the WTC for a ballast tank. My good friend Dave "BigDave" Welch built his with a gas system, enclosing the ballast tank within the WTC itself. I will be submitting a follow-up article to the SCR covering these two conversions as soon as I finish mine.
Mike, I'm glad you found my article useful. If you want to get an idea of what can be achieved with this model, do a search on these boards for "Akula" and you will come across some photos of the beautiful detailing job Dave did on his. I believe Tim Smalley also has pixs of Dave's boat on his RC Submarines website.
George "Crazy Ivan" Protchenko
“There are the assassins, the dealers in death; I am the Avenger!”-Nemo
"I'm disinclined to acquiesce to your request; means No!"-Capt.Barbossa