I’m thinking your right on that .
I do have another question maybe you can help me out with , the middle aux berth would need most likely a piece of plywood or something compatible under cushion, then that whole piece needs to lay on some sort of support system , I can probably mount a small ledger to rest middle berth on , but then cushion alone would have to overhang plywood to flush up to sink cabinet and also starboard cushion. But what is confusing is there’s a ledge already there on sink cabinet and some room on starboard side , but then would I have to make cushion thinner to be flush with existing cushions and rest complete middle berth on existing ledges/ fiberglass bunk . I hope I’m saying all this correctly, Im just trying to figure out what they do from factory. I did call Grady white and all they said is everything is different from 2006 .. mine only other idea is go to a dealer and look !