The nut did not cure the issue. Will check under car and pads over the weekend. If nothing comes then I'll call dealer.
Kona Blue 2012 GT Premium, Brembo, 3.73, AED Tuned, Corbeau CR1 seats with Harness, Koni Yellows, Steeda Sport Springs, Strano F/R adjustable sway bars, BMR LCA & PHB, Lethal O/R H, GT500 Axelbacks, Boss Pod w/ Prosport Gauges, Boss/CS F&R facsia'a, Goodridge SS lines, Boss Brake cooling ducts, Boss splitter, Roush side splitters, Saleen Grill. Mustang Dyno 379 HP & 371 TQ