I have pulled up my carpets and found the beveled edge V Groove red oak floors. They are lovely. I have had contractors out and they all say the pet stains will not come out and the water damaged boards will need to be replaced...But from what I read they will if I use some Oxalic acid stuff or wood bleach. The real question I have is some contractors say Yes you will have to fill and others say no due to the type of flooring. I am not sure. Since There are some 1/8" gaps... To fill or not to fill that is the questions? Thanks.