Hi, we've just bought a stack of 180mm x 20mm real rustic oak - brushed and olied for fitting throughtout our house (minus kitchen). The boards are to be fitted to chipboard type floor (the house is 13 year old) I've spoke to a couple fitters and they are waving their arms shouting 'no don't do it' They're saying 180mm is a nightmare for cupping and I should exchange goods for a less wide board or go for engineered boards. Trouble is my wife loves and picked it! Is there any solution? Or do I break it to her gently? Thanks in advance!