make sure the strut/spring was assembled correctly.

 

Same problem on mine with Tein springs. But mine also clunks driving straight over bumps too so I think my motor mounts are totally messed up. I'll still give this a try just to see if it is my strut mounts and not just dry bearings.
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my bet is you have a ball joint that is bad. motor mounts have little to do with suspension and steering...the axles, because of the way the inner CV joint is designed should not translate any force from the suspension compressing, to the engine mounts...