Julian,
I had this happen on my Ferrari, turned out the front left in my case, Koni was failing. The car would dive more on the left, hence pull left. Not like you can just push an a fender to figure this out. My tech pall suggested it. Pulled the shocks and swaped...yep. problem on the left solved, now on the right. Sent the shock pair to Koni had them rebuilt.
hope this may help.
Daniel
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