kitchen floor has a hump
My house was built in the 1920's.
The depth of my kitchen (from front to back) is 9 ft.
If you were to walk from front of the kitchen to the back, the first 5 ft are flat and the last 4 ft slopes upwards to the back wall (incline is 5" high).
This hump seems to be contained in the kitchen only - it is not evident in the hallway and rooms adjacent to it.
Directly below this area (in the basement) there are no irregularities in the joists etc.
The previous owner lived in the home for 30 years and said the "hump" was there when they moved in.
How can I deal with this?