I don't know whether this question might answered but what would need to happen for CWF to decide that a large case item merited an Xray or other technique to reliably determine its interior construction. It was odd to hear about the amount of guesswork before construction commenced on a reproduction. Also, whatever became of the joinery shop at CWF? I used to follow its updates on FB and was impressed that a separate set of tradesmen were properly acknowledged at CWF. Where are you now, Mr Bocanat?