I've reached a point and am not sure how to proceed.I have uncovered the floor in my daughters bedroom to find pine plank from 12" to 18" wide in reasonably good shape.There is a seam that runs down one side of the room about 1 1/2' from the wall. I'm sure that the boards run through under the wall.Two of the boards in the doorway need some repair,there are a few large gaps where the touge and groove don't meet or has broken off. I would like to refinish but I don't know if I should try and replace the bad board or if I can find a plank of that size. I do have access to a custom mill. If I do replace How far do I go?