gunner4x4

Have what sounds like shock knock coming from the front right when traveling very slow on a bumpy road. Just prior to noise starting, I hauled a very heavy load and front end did float somewhat. Front right side also is sitting 1/2 inch higher than left side now. Replaced a shock -noise went away for awhile - I think. New shock appears OK but haven't pulled off to check, have checked upper and lower balljoints and control arms, have greased everything, torsion bar looks sound.
Need help. Any ideas?