Recently lifted the Jeep with the RK 2.5" adventure kit. Noticed the rear springs seem to be bowed towards the rear of the Jeep. Is this fairly normal without adjustable control arms in the rear?
I think RK comes with some slightly wedge shaped spring pads to help with that, which your already using.
If your pinion to driveshaft angles are proper right now, then not much will change with adjustable control arms. My rear springs are the same way after I installed the UD60 with Adam's DS and set the pinion angle according to their specs. Not much you can do.
I have the same lift on my Jeep and the rear springs do the same. I need to upgrade to adjustable control arms. I actually took mine apart to make sure I installed everything correctly.