Has anyone figured out how you adjust the green arrow on the various sliders in the ship designer without holding the left mouse button on it and moving the mouse left or right? In other words, whenever you click the increase/decrease arrows on the slider it only applies to the red arrow. As well manually clicking the numbers after you have moved the green arrow does not change them. The number you entered may be displayed, but its not the number used by the designer.
Quick reference picture: