Correcting spots where stain and poly have completely worn off

Q: Six years ago in an entire home remodel we matched our existing 1949 Red Oak flooring and had it installed throughout house seamlessly. We stained the oak with Dura seal to even out dark staining from the decades of use and spills. There were 4 coats of poly used to seal. Now we have a few spots where the stain was never “correct”. The poly and stain are completely worn thru and back to natural.

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