Flooring
>Old ass house
>Single story
>Floor started sinking a year ago
>Floor sinking lengthwise with planks
>Approx. 1' * 6" sink pattern
>Tongue and groove planks
>No visible nails
>Appears to be on top of 1/4" green rubber padding
>Padding on top of concrete
>Low budget
>Novice
>What do?