Ok, so I did this today and completely messed up. I think I recovered from it, but who knows until I get another alignment!!
In the video, the S3 adjustment is made from behind the front tire. On our trucks, the adjustment is made in front of the tire, so where he shortened the length, I would need to lengthen. No issues there. Where I initially screwed up is seeing that he went clockwise to shorten, I decided I needed to go counterclockwise to shorten. That makes sense, unless the threads are reversed!!!
So, after a 1/2 turn, I was worse than I started, so I had to readjust in the opposite direction. But then I couldn't remember which side I went clockwise and which side was counterclockwise. Such an idiot.
I have no idea where I'm at with turns on what side now. So, here's what I did. I ran a string around all 4 tires while on the ground to see what was out and what wasn't. With my wheel straight, I figured the driver side needs x and the passenger side needs y. I adjusted, lowered down and checked the string was touching all tires at the front and rear equally.
Took it for a drive and the wheel was straight and it tracked straight. I think I'm ok, but we'll see.