No. You can though, but I did not.
I hammered that piece into the fender as much as I could without messing up the fender itself.
Its basically flat against the fender wall now.
In fact, when I did it, the driver side was more of a plastic soft feel to it with very little metal in it.
Almost like layers and layers of paint the clearcoat that was just hanging there but was pretty stiff.
Let me know if you want some pics...I can try to snap a few in a few days (won't be around the car till around friday or so).