I can't help you with the HD Kits... I build mine from scratch...

The Mountain dulcimer Question... JinK got it ... also... There is another common problem, and that is that the fretboard can warp and pull away from the body, and thus... raise the action to formidable highths. The difference in repair is that the fretboard needs to be pulled back on the offending end(s) and glued... and reinforced if need be... Hold it up with your eye sighting down the fretboard from end to end, to check the curve it makes... This is supposed to be very slight, but if the strings are left alone without supervision... ;^)ttr