I recently installed a set of function form type 2’s on my 2015 civic si sedan and now I’ve got a front strut noise going over bumps. I checked the strut tower bolts all tight. It sounds like it’s coming from the top hat. Can u tightened the nut below the stiffness adjustment knob?? All signs are pointing towards the top hat. Also notice their is white stuff around the base of the strut tower is that normal?