I aint that familier with the set up on the aero but if it was a normal coil spring set up and it is only a minor amount it could be broken spring, some people look to the middle of the coil expecting the break but for a small margin like a CM or 2 it could be the last coil at the top or bottom !! i assume you have checked the obviouse, like soft tyres
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33 MAX v SPIDERMAN