Those new shackles look a bit chinsy, how thick are the sides? Also, you have the bolts too tight, as they are bending the sides, which should remain parallel. Did you support the frame and assemble everything finger tight before torqueing any bolts so that nothing is "forced" into position? I def. now think it's your springs. I would start the warranty process now. You didn't pay for a defective spring or to have to try to fix a faulty product.
If you happen to be taking the spring off for any reason, take and set the spring on a level surface but set a socket down first and then the exposed bottom threads of the centerbolt into the socket. Use a large socket. This should balance the spring. Now lay a torpedo level across each spring eye top (perpendicular to the spring). Both should be identical and level.
The end of a defining era.... JEEP R.I.P. 1941-1986
My frame off Re-Build: (the 4 year saga....)
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