Moog UCA bushing installation

Just out of curiosity what would be the most caster you can get out of it if you followed the instructions?

Which instructions? The original Moog instructions? Probably not more than +2° caster.

The instructions for maximum caster should give up to about +3.5°
moog7103installinstructions-jpg.jpg

Not to hijack,
Thank you very much for the good explanation, I think the alignment shop did a crappy job on my Duster, it wants to wander like the steering box is not wanting center, now I thinking they got the caster screwed up, everything is new including the box in my front end.
I asked for a print out when they did the alignment, and they gave me the excuse the printer was broke.

If they wouldn't give you the specs, then I would absolutely suspect the alignment. You don't need a printer to give the specs. Most alignment shops now have no experience with aligning one of these cars. And their computers always show the factory specs anyway, which are for bias ply's and call for negative caster and positive camber. Which is a disaster for radials.