Not that it matters as you cleaned as well as the cramped space allows but there has to be connecting plumbing between the two compartments otherwise how would water in the front compartment ever leave? Bilge pumps sit a couple inches above the bottom of the boat so you would always some water in the forward compartment if there was no connection. My Bayliner has a central drain tube coming from the front compartment, exiting directly below the factory installed engine compartment bilge mount. With the gas tank and water reservoir tank in the center, perhaps you are encountering a "T" in the plumping that is routed around those tanks. Someone who has refurbished a Bayliner may be able to shed some light to the issue. You also have weep holes thru the stringers that can get clogged. They drain near the transom into the engine compartment.