2014 Fiesta ST Stock suspension, when going over jarring bumps, potholes I hear a bang in the front like something is hitting the shock tower, happens on both sides of the car. Dealer can't find anything wrong says everything is tight and they have replaced my end links. I was thinking about just buying some used struts and swapping them in to see if that makes a difference. Is there anything I should look for? Thanks for the help!