Bought my 2017 GT350 on June 10th. On July 20th, I noticed significant gaps on the left and right sides where the rear bumper meets up with up with the body. Local Ford Body Shop said this is a problem with Shelby's located in the desert southwest due to the excessive heat. It causes the plastic attach brackets to weaken and stretch. Anyone else have this issue, heard of this issue, or even know it is a real issue? It took almost two months, but the brackets were replaced today.