"Here's the link to the 3 string wooden retainers Uncle John.
8pc. Wooden Retainer Nuts for 3-string Cigar Box Guitars - C. B. Gitty Crafter Supply (cbgitty.com)
I haven't found any four string retainers sold separately but I know they make…"
"Gees. The string separation and 'hold down' are critical and that setup has to make it easier and more precise. I like zero frets. Very nice looking headstock, neck, fretting and contrast of wood tones.
If I need to order CBG stuff this…"