Uneven Truck w/ 2" Lift

[elmono]

I put on Rough Country 2" springs on front and back (52" rear springs) earlier this year. Since then, my driver's side dropped 1" (22 3/4" from center of hub to fender on driver's side and 23 3/4" on pass. side). Rough Country is replacing the front driver's spring as per the warranty. Is there anything else I should be looking at? Suspension bushings, shackle bushings, etc? Also, the body lines appear to be straight on both sides, so I ruled out the body mounts; should I consider these as well? Thanks for helping out.
Chad