I have always been one to shade with the #3, but drop the pressure. Then I'll set the little wheel so the tip is just barely open. That saves me from accidentally pulling too far back on the trigger. The only problem is the tip loading up. If you're using lacquers, you can thin it, keep the pressure low and even drop to the #1 tip since the paint's so thin. It's really hard to use the #1 tip with Faskolor since it's so heavy. I'm going to try thinning some Faskolor to help with fine shading on my next body. And remember when you're shading to spray primarily on the mask and let the overspray bleed off the sides. That will give you a nice shade without putting a heavy line on the outside of the masked border.