As a total newbie to buying hardwood timber, I had occasion to buy some European KD oak for a chair I plan to make. I collected the wood from a local sawmill but self select was not an option due to current regs. I didn't inspect closely but was assured this is prime oak, which I assume is QFA according to current grading. One of the lengths is pictured below and I know Custard did a brilliant blog on buying hardwood. For those who know what to expect when buying from a sawmill, would you say this sort of inclusion is permissible under grading guidelines, or have I been sold a pup? Product is 27mm sawn square edge.