hey there, i have worked on this one for a while and truth be told for me i got tired of messing with it so what i did was ran them all and then i picked a 3.5 because of my hand speed. i run Inkjecta. so then i put that one on and i adjusted myself to that setup for lining, color and shading. also i discovered that i don't like give machines so i bought a hard bar for it and now its great . just the way i did it hope it helps.
I use shagbuilt D20 for shadeing and colering. Has a 4.5mm storke, allso i Got tired of thinking about it. I just put the needle out a little father when I do colors and even more if I'm packing one solid color. And I change my hand speed to a slower movement for colors