Does anyone know the recommended distance between the seat of the piano stool and the underside of the keyboard.....excluding fat legs allowance of course!!! Not that I have fat legs! I think that if this is not correct it can lead to back ache and neck ache. I think my duet stool is too high and as it is a lovely one I do not want to saw off a bit of the legs unless it is really necessary. I just FEEL it is too high but my daughter (who also plays, at Grade 7 level) is smaller in height than I am and may need it left as it is?????