Here's a head scratcher... I'm getting small amount of salt water trickling down from the horizontal surface directly below the after end of the fuel tanks on the outboard side of both engines. About a cup of seawater accumulates under the P&S transmissions below the dripless shaft seals after a 2-3 hour run at speed. It only happens after being underway at speed and it does *not* happen in very flat sea conditions. I can't find the source and it's driving me crazy. Rebedded all the hull sides discharges (fresh water, bilge pumps, etc.) Reclamped all the raw water exhaust all the way back to the transom. Maybe getting up and in behind the rub rail? Maybe someone here as experienced and solved this.