My guess is a problem with the perimeter tile around this 1959 ranch home that I have. It's pretty much in a small area of the southeast corner. I wonder if a tree root could have worked it's way inside the tile and if so can it be reamed out without replacing all of it? I've called one company and they're booked until July, another hasn't returned my call. Any advice or recomendations will be much appreciated. Sounds expensive.