Soft floor 1992 300DA in front of galley

[stingrayroadwarrior]

I am looking at a 1992 300DA this otherwise in very good condition...with one exception.
While performing a pre-purchase inspection, I experienced a soft spot in the cabin floor in front of the sink/galley area.
Vessel has recent carpet, and after checking adjacent areas, this appears to be isolated to the area mentioned.
Anyone have any experience with this condition?