Covering all the holes is an ongoing process that the weens will be faced with for years to come. Everytime they go on to another instrument, the grip changes. After playing flutes, whistles and Uilleann pipes - a set in D, I got a flat chanter (a chanter in c) and there were a couple of hours of covering all the holes again, when I pick up a strange whistle, like a huge low D whistle, I remember what the kiddies are going through, all over again, but like the process of mourning, the only thing you can tell yourself, and them, is this too shall pass, and the fingers will fit the frets or the holes or keys and sweetness and harmony will be restored to the home, or the kids will get board and turn to the telly. All the best Larry