Theres a young fellow named Brad who, I have to say, personally saved my boat from sinking after Katrina who may be able to help you if you're still looking. Don't know if he'd want his phone number published, but if you're interested I'll call him tommorrow and see if he wants to tinker with it. My email is rollanz@jam.rr.com.
I personally saw my boat with at least 24 inches of water in the cabin, needless to say the engine was under water. He had my Atomic4 purring like a kitten last weekend. He's not a professional, but if you're interested...