I dont know what part is duplicate. My pinon has rotated the wrong direction during the night and jacking on the axle has just made it worse. My bump stops were centered with the lower control arms and now the springs are fighting my attempts to rotate it down. The pinion angle is measured with wheels on the ground but my suspension has fought me ever since I removed the first control arm. My pinion is now about 29 degrees and I was trying to get help without jacking the jeep back up and letting the axle down to remove the coils and starting all over again.
I am fighting a similar problem right now. Blaine walked me through it some.
Jack the jeep, leave the springs in.
put jack stands under the frame to support the jeep, lower the axle
remove upper passenger arm
Use the drivers side to adjust the pinion angle. This one may fight you a little because there is a little pressure. if you need pinion down shorten the arm, if you need pinion up lengthen.
I just pull the bolt out, turn the adjuster in or out as needed, then push the bolts back in, using a drift to align the bushings/rod ends. I dont tighten them yet
Jack the jeep back up, put jack stands under axle, lower jeep onto the stands under the axle.
Check the alignment of the driveshaft.
The pinion agle needs to be within 1 degree of the driveshaft
Repeat as necessary until you get the pinion where it needs to be.
then tighten up the UCA bolts on the drivers side. Double check the angles, if it is good, then install the passenger side by adjusting it until the bolts align up without forcing the axle angle, it may need the drift to get through the bushing.
Tighten up the passenger UCA, double check driveshaft angle, if it is good, remove jeep from jackstands.