I've created the knee pads using WOF schematics. The knee dart block have slopped sides, and the slope of the face that the darts connect to is at 22 degrees. Do I stick the darts perpendicular to that face or do I counter sink them a bit and attach them straight forward. I can't really tell from pictures. They look kind of silly sticking out at an angle so I want to make sure that's the correct method.