String height above the "fretboard" at the dou...

Haven’t got all the terminology down yet…:slight_smile: As I’m moving forward getting this nagauta shamisen set up, I’m presently sorting out koma sizing. At the base of the sao where it meets the dou, what is a typical or reasonable string height off the sao where the strings head out over the dou? If this were a guitar or a banjo it would not be an issue for me, but don’t know what is “normal” on a shamisen. Thanks.