Does your shocks have misalignment heims or spherical bearings in them, or bushings? It may be an optical illusion, but in the photo it looks like the upper and lower shock mounts aren't parallel. Appears the shock would be in a bind unless you're using high misalignment bearings. If its off the way it appears, the panhard will be pulling your axle to the left during droop or bump, which looks like it will increase the bind. you may be able to fix it with bearings in the shocks. As Rebekah said, remove the shocks and springs completely and cycle it though every angle you can think of. The shocks shouldn't be adding anything to locating the axle side to side. That should all be done with the links.Pay attention to if the panhard is trying to pull your axle too much to the left. If that's happening, maybe you can lengthen the panhard or ditch it and go with a watts link, or triangulated 4 link if you're able to package it under there.