Hello. I'm looking at replacing 6 internal doors with those white 6 panel doors you see everywhere. But I am finding it difficult to find doors to fit. The current door depth is 38mm or 1.5inches but the ones I see on the internet seem to be 35mm or 40mm. Is it possible to get 38mm deep doors for a reasonable price and if so where? Or is the best option to get the fitter to replace or resite the stop blocks to accommodate thicker or thinner doors. Thanks.