I would take a look at the left tension strut for play. Could be defective or prematurely worn - this happened to someone on this message board iirc.

Also, which brand did you go with?

I’ve only had my lemforder tension struts for about 20,000 miles/3 years but I think one of the bushings have some play so I’m probably replacing them soon. Good thing I bought from FCP with lifetime warranty.

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e70 - purchased 6/2018
e36 - wouldn't pass smog at 190k 2016
e53 - transmission blew at 225k 2012
e30 - sold as it was a little slow for a DD and burning oil at 220k 2011