When knitting narrow bands on the ribber, it doesn’t make sense to use a 100+ stitch ribber cast on comb.
Try using the “7” weight hanger that comes with most ribbers.
Simply hook the hanger over your zig zag row to weight the work. Hang a weight, or just hold the hanger to add weight to your knitting.
TIP: If you knit this style of band often, it would be worth investing in a spare ribber cast on comb and have it cut into small widths.
We recently re-discovered this tip when knitting bands with vertical buttonholes. So much easier than fussing with the cast on comb.