Late to the party, but had this exact same issue. I fixed it myself in 15 minutes. Loosen all 8 bumper bolts, adjust, and while holding in place, retighten. I tightened the outermost two first, then the two center ones behind the license plate, then the the 4 center/main ones. It's 13mm and 19mm bolts/nuts i believe. Hope this helps. God bless.