to reiterate. there is no reliable fix for this. replacing parts that make noise with the same parts = same noise. fuhgettaboutit. you will just frustrate yourself to no end by taking it to a dealership (been there, done that). there's no money to be made in warranty service. i'll buy another ford and my suspension creaks like a mofo. build quality of these cars is plenty good. just one of those things you have to live with.
2013 V6 MT Sterling Grey - 3.31 gears, JLT Intake, Boss Strut Brace, GT Wheels, Infinity Reference 6x8s, Rockford Fosgate P300-10