Fiberglass Help!

[Wreckless35]

I'm having an issue with fitment for my S14 Kouki 50mm Origin rear overfenders (go figure) & after a great install/riviting job by a friend in the area that does every locals work, yet I'm still left with a overhang on my drivers side wheel well that doesn't allow me to place my rear bumper on properly. Everything lines up correctly up top but there is extra material along the wheelwell that needs to be removed. If anybody knows a fiberglass fabricator or a bodyman who can help me, let me know. I'm sure others have had the same issue as myself but here is a picture of exactly what I'm talking about...