waggy caster help

I'm ready to weld on all the brackets but I want to check the caster first. I have the diff set to 10* for the drive shaft but I'm not sure if my caster is good. here's some pics.





When I measure the flat surface of the tierod mount I get about -1*


So how do I measure the caster for a 91 Grand Wagoneer?

I have the same angle finder and put it on the bottom of the lower balljoint. 6-7 degrees is good.

Ok measuring off the lower balljoint I moved it to 7.5* as seen here

This allows the steering arm to point up 7.5*


Now I just need to turn the knuckles so the pinion points up higher?


Am I correct now?

yep, turn the knuckles so that the caster is 7-8 and the pinion is pointed at the t-case output.