Hi joe747 - was any work done on the rear quarter that side? Something's not right, and it sure seems that the extension wouldn't sit right relative to the quarter with it cocked to one side like that. The mounting holes for the extension are large enough that you can tilt it somewhat, but with the extension lined up to the top and side of the end of the quarter, the rest should fall into place. Tail light panel replaced or patched? Are the two tail light holes in line with each other? Here's a rear shot of my car if it's helpful. (This is an older photo - horizontal stripe sits a little low and blackout wasn't done around the honeycomb panel yet) Let me know if there's anything you'd like measured or photo'd. :