The home had major fire damage. I was sub contracted by the GC to provide and install new wood flooring. The main level of the home has both plywood and concrete subfloors. The plywood subfloor was was not level and showed sagging in areas that may have had water from the firemen pooling. We did the best we could to level the floor but it still was not right. I don't know if the plans called for the floor joists to be replaced or not. We informed the GC multiple times about the situation but because of scheduling pressure with other subs we all decided together to proceed with the install. The GC argued with us about the subfloor problems. Now the Homeowner has moved in and is complaining about the new wood floor not being level and wants it pulled up and re-done. What is my liability?