It is nice to hear that diatonic players have difficulty on hole 2 Draw of their harps, 'cos exactly the same happens on the chromatic!! Pupils with most 12 hole chromatics seem to choke the durn things on 2 Draw. As they mostly play C Chromatic this note is F. But it seems to happen with tenor tuned as well.
Anyone any ideas. Is it a positional thing, mouthshape (not convinced) resonance, a conspiracy of the harp manufacturers?