I recently installed some hardwood floor in my living room / kitchen. I'm very happy with the job I did except for one strip of hardwood.
The problem is I can feel the some part of the sub-floor pushing up against the piece of hardwood as though it wasn't perfectly level. It's really only noticeable when you walking on it but I'm wondering if there's anything that can be done to fix this.
The floor is nailed in, so I can't remove the board and sand down whatever might be pushing it up.