Hi Bernie,
I always use fill screws on all of my DIDs with fat solid wicks except that hard to tame Gemini but with ss rope, I think the fill screw will be where it's belong.
I got some 3.2mm 7x7, 7x19 and some 2.4mm 7x7, 7x19, I will order some thinner ropes to try like 1.2mm,1.6 for the Gem...