Help with restoring a 1962 Arthur Dixon dulcimer?
Instruments- discuss specific features, luthiers, instrument problems & questions
I worked on a dulcimer that has a similar problem. When I put the straight edge on the top of the fret (these were regular frets across the whole fret board) I discovered that the section after the strum hollow to the tail was 1/4 inch higher that the rest of the fret board. That back was perfectly flat. I trimmed off that quarter inch, cut a new slot for the bridge, the slots for the strings, etc. and wound up with a great playing dulcimer for the customer. You never know what idiosyncrasies you'll find on some of the these instruments. I'm not suggesting that this is your problem. You noted that the tail piece on your dulcimer is higher than the fret board so you would either need to trim it down level or live with higher action. The question is do you want to live with the historical value of the Dixon dulcimer or would you rather have a dulcimer that can be played finger picking style rather than noter style. I've found that many older dulcimers have higher action, not just for noter style playing, but also the maker doesn't have to level the frets that way.
Ken
"The dulcimer sings a sweet song."