lift kit knocking noise

[bkvnge]

need help, just got a 2inch dobinsons lift and right away have a knocking sound from the rear. not sure what it is but happens on little bumps in the road and on speed bumps.

 

[RickaD23]

After installed "2 inch" Dobinsons only lifted 35mm and and had a knock at full droop after passing a speed bump. At first thought, I suspected UCA to shock tower contact but turned to be strut full extended knocking inside.
Went back to shop and changed spring for lighter ones and no more knock.
But finally only got 20mm lift and I was so dissapointed that took the Dobinsons out and sold it for cheap.
Really bad tech advise from Dobinsons sellers in my country, Panama.

2022 D23 series 5