A stringed instrument repair person (and dulcimer player himself) inspected the Simerman, ever so lightly filed a fret at the bass string, and declared that I can sell the instrument in good conscience: it is in great shape, sounds good.
For those who were interested, I am sorry for the long delay. But I really wanted to have a pro look at it to make sure it was the fine instrument I knew it to be before I would sell it to anyone, and, living far from just about everything, it took a while to get around to getting it looked at, as I didn't want to send the dulcimer away if it wasn't necessary.
It is available now again for anyone interested.