The harmonica I ordered was an E natural minor.  The harmonica itself is high quality and plays well; very comfortable in the mouth.  However, the 10 hole draw, which should I believe be an F sharp (or at least would be on a Lee Oskar E natural minor), is tuned to an F natural (the 6 hole draw is correctly tuned to F sharp).  I can fix it myself, so it's not worth a return over, but is this a standard tuning practice common to all Dabell natural minor harmonicas, or an error effecting only this one?