I recently bought a used Seaway 17, built someplace in the Northeast (Rhode Island maybe?). Is the company still in business ? It has a fuel tank under the deck, does anyone know the capacity of the tank ? The boat has not been used for 2 years, unknown sludge and water may be in the tank (no drain). Any suggestions on how to clean it ? Is a filter/water separator really good enough to protect the engine (Tohatsu outboard) ?