I have a house that wan built on slab back in 74. I have water coming through the cracks in the new linoleum and have no idea where to start. Dish washer is fine, drilled 2 3" holes in the back of the cabinet just above the seal but evidently the piping is coming up through slab further down the wall. It has to be in the sink area also this is an outside wall. Do I just keep drilling holes!! Any help would be appreciated!