Joe
Looks as though you've got a standard McSpadden "kit" dulcimer from the early 70s - small body, laminated walnut-faced back and sides, walnut top and sta-tite tuners. Certainly not a baritone.
I've had two to work on. Both has similar problems and neither played in tune when I got them. The fretting proved to be spot on (and presumably done in the shop before shipping), but:
(1) No-one seemed to have told the poor end users that the zero fret was the start of the VSL and the wooden "nut" behind it was just a guide which needed deep, deep slots to allow the strings to bear down firmly on the zero fret;
(2) The bridges/saddles were too high.
Effect of (1) is that the intonation was out all the way up because the dulcimers thought they had a longer VSL than they were designed for; of (2), that the strings were sharpened by having to press the strings down too far.
With yours, I'd start by taking down the action drastically (as other have said) and checking that all the strings are not loosely touching the zero fret or vibrating completely freely above it. As I say, I thought the fretboards were very accurate when I got them sorted. Nice sound as well - trebly, not loud, but quite sweet. Just sold the last one a week ago to a very happy customer!
Best of luck

, I would suggest sanding the bridge down to the bottom of the existing notches -- it can be sanded in place or removed for sanding. Use a flat hardwood sanding block to get a nice flat surface. You can use the melody and bass strings, still attached, as a kind of guide to mark how much to take off after that. Build a much wider temporary bridge, to hold the strings at the proper height at the 7th fret. It can sit in front of the old bridge. Tighten the bass and melody strings on the temp bridge, and them mark where the strings touch the sides of the in-place bridge. Then you can sand/cut the old bridge down to slightly (1/32") higher than the marks. File ( with a triangular needle file), do not saw, new notches. The notches only have to be slightly deeper than the diameter of the strings...
to her, she would nod her head and say Ya Ya
, I thought she was agreeing with everything I had to say LOL. soon a crowd was gathering around us and I saw a lot of snickers
and giggles
. I was flabbergasted
, I said well we were having a heck of a conversation
!Needless to say we got along great I did all the talking
HAHA I took her for a ride in my little green dunebuggy and she had a ball, we understood each other
on a different level, we enjoyed laughing
and having fun
.
And it's so great that it came with a case and a JimBow! I hope you enjoy your new JimBow as much as I'm enjoying mine! At any rate, you found a unique dulcimer at a terrific pricehow cool is that? I can't wait to hear it!