I wouldn't dare. I have a lifelong reputation for bad fingering (on all instruments: Piano, guitar, dulcimer, probably on fiddle but I've never had a teacher so nobody's ever corrected me).

Actually, I would dare. I do. Only I would never tell anyone that I'm "doing it right" because I know I'm probably not. I've taught dulcimer before and luckily, it's not that formal so I can tell people to do whatever is comfortable.