Alignment question - stock UCAs and relationship between caster and camber

Just had recall leaves installed and to my surprise the dealer did an alignment. I had aligned it myself in my garage by eyeing it beforehand, so I knew the orientation of all the cams. From the looks of it, they really only touched the front left cam and adjusted the toe. I'm actually surprised with the ride on the highway at 70mph. It wanders/reacts slightly but with my caster numbers, and from what I've read on here, I was expecting to be barely able to hold it in my lane.

I'm still on stock UCAs and my question is:
What is the relationship between caster and camber? I see I still have some positive camber. If that is reduced closer to 0 does that increase or decrease castor? Or is it not that simple?
And it looks like my cams are approaching the max'd out position of pushing the bottom of the wheel out (particularly on left wheel). That would make it hard to reduce the positive camber, correct? Is this where the need for new UCAs comes into play?

Sorry, newb here.
I'm just trying to decide if it is worth bringing this to another reputable alignment shop to get a little more dialed in, or if that would be pointless without new UCAs. And FYI I am running 5100s at 1.75 front with stock coils, and just 4-leaf recall pack in back with 5100s as well.
Thanks,
Josh

 

Still curious about relationship between camber and caster on the 2nd gen. Will pulling my front eccentric cam in and pushing the rear eccentric cam out shift my steering axis rearward and therefore increase caster? Can good camber still somehow be accomplished while doing this?
Thanks.