Rear clunk noise

Hello All,
Looking for some help.
I hear a “clunk” noise in the rear, sounds like it’s from left to right. Happens when I make left or right turns.
I’ve emptied all storage to eliminate cargo swaying, I’ve torqued the U-Bolts for the leaf springs and rear shocks. I’ve torqued the bed bolts.
I’m running Bilstein 5160 rear shocks with Icon leaf springs.
Any advise would be helpful.