I have a 98 Cherokee with 4.5" RE superflex kit, 32/11.50 BFG KO's.. just took it to get an alignment and my caster is 1.6 degrees which the manager didn't think was too big of a deal, but on my camber the left was negative 0.2 , and the right side was negative 0.8
Is that considered a huge difference? and what might be causing one side to be way more off than the other side?

 

Camber is within spec, don't worry about it. Caster on the other hand is way to low. It needs to be closer to 4-6 degrees in my opinion.

 

You don't really have to worry about camber on solid axle vehicles. The only things that can cause camber are bad ball joints or bad wheel bearings or bent axle

 

that's what I thought, the guy was saying I need to get offset balljoints, but that doesn't make sense unless my axles bent, and I don't think it is... so should I put in some new wheel bearings and new ball joints and have it rechecked? also I think im wrong about the caster the printout shows from 5.3 to 8.5 and it shows 1.7 above 5.3 so maybe my caster is 7 degrees? I added a pic of the results to my photo album maybe some can take a look that understands it better than I do

 

Hard to see your picture. Some of it is cut off

 

Your camber is at the edge of spec. You can try to fix it or leave it. I wouldn't worry about it unless it is closer to 1.5 degrees on one side.