If the floor is solid and does not move then it could be that the others are out too.
How to fix a warped floor joist.
How to straighten warped floor joists.
Repairing flooring vinyl wood or tile costs 347 on average or between 188 and 512 because pros need to go through this layer to get to the structural elements of subfloors and joists expect to pay far more for structural repairs.
Lets look over straightening joists in and existing home and hte property of installing underfloor insulation as we go.
Even though we use 1 pt lumber the joists are often slightly warped or vary in depth at times causing adjacent joists to differ in height by as much as 1 2 inch or more.
How to straighten a warped floor.
Typically one end of the joists rests on an exterior foundation sill and the opposite end rests.
Warping manifests as gaps between the boards.
Wood responds to changes in temperature or humidity by warping and that can be bad news for your hardwood floor.