strut going thru mount Options

[Jmk91]

So I installed all new KYB g2 struts with KYB mounts and brand new bump stops and sway bar end links and TRD springs. Everything is 100% new and correct parts. What's happening is the rear strut is moving like pushing threw the mount over any bumps causing a clunk sound. The nut in the rear that's in the middle of strut mount has play over any and all bumps. Like my strut isn't done correctly. The strut assembly is moving. I've replaced everything I can think of I also installed everything correctly... Ive had out the rear struts 3 times. Everything is done right I even have everything torqued to spec. So I'm lost... I didn't get an alignment yet but I honestly font want to drive my car way it is to a shop. I don't want to damage anything. Any ideas before I take it to a shop and pay out 3 arms and 2 legs. Any suggestions or ideas or if anyone else has went thru this help is greatly appreciated. Its also only in the rear. Front are fine I did all 4 at once.