Wheatstone Custom Key Layout in General Concertina Discussion Posted August 5, 2015 Thanks for the quick reply. There is no apparent abandoned hole repair for the D# so I am guessing that both it and the new F are original along with the whistle key. I have always suspected that the C/C# and the B flat/G# levers were reversed at some point in its long past but am reluctant to open it up. I have two reeds that are - shall we say "reluctant" - so at some point I will need to find a doctor and will ask about putting things back to standard then. Thanks again.