Grinding from rear around turns after 3.5" lift

Lifted my truck with below hardware at the recommendation of extreme terrain. Wonder if I was not supposed to use the blocks and rear sus together. Now I hear grinding on left or right low high G turns from rear. Thinking axle angle changed to much. And questioning if front diff drop is actually the answer or .....

Installed Hardware:
Front

• Bilstein B8 5100 Series Front Shock .87-2.30-Inch Lift
• Eibach 2inch lift springs
• Freedom Offroad Front Upper Control Arms for 2 to 4-Inch Lift

Rear

• Bilstein B8 5100 Series Rear Shock for 2-Inch Lift
• Supreme Suspensions 2-Inch Pro Billet Rear Lift Blocks

 

Usually when rear is lifted on a leaf spring tundra a carrier bearing drop is needed. I needed one when I raised my rear just 1 inch.

Id start there, carrier bearing drop and see how it responds.

 

Probably not it because you didn’t mention any other work, but when I did my coilovers, I replaced the tie rod ends. Like a dummy I put the left on right and right on left - this caused it to rub the inside of my rims when turning.