The arms just showed up today, and from what I can see, the ball joints are screwed into the ends of the arm. On mine they are fully I serted and turned 90 degrees from up/down. Question is, what's a good starting point or setting to get these as close to right the first time? I really don't want to pop spindles for three days making adjustments. Anyone have any experience with these and care to share a setup or some "tricks?" Thanks.