Troublesome leak in 73 Tsunami

[Entourage]

Brand new scuppers, removed through hull transducers and still have water getting into my bilge in my 73 tsunami with 350 MPI mercuiser, Bravo 1 Outdrive. Does anyone have any suggestions on where the water can be coming from? It is not coming in from the air vents cause there was no waves the last time i took it out. Is there a place where water can be getting in from that i can't see. The motor is not fresh water cooled. The motor only has 30 hrs on it and the water in the bilge is driving me crazy. Any help on this issue would be appreciated.