I installed the Teraflex spring leveling kit on my 2 door jk. After install i noticed the common passenger rear side sag, about 1/2" lower. I want to order a 1/2" spacer to correct this. My question is, when I install the spacer at that corner, can I just loosen the control arms for that specific corner and just jack up the jeep at that corner leaving the other 3 wheels on the ground and install the spacer? or do I need to loosen all rear control arms and jack up the whole rear end again? Thanks, I did a search and only found info/instructions on the complete install not just one corner.