The issue is to keep the ends of the hydraulic lines clean when they are not attached. For instance, when you hook up the mini hoe lines, you first have to detach the QA lines. What do you use to cover the exposed ends of the QA lines to keep the dirt and crud out? I've been wrapping rags around the ends, but that's getting tiresome. It would be nice to have some spare hose ends, or plastic caps of some sort.