355 Wheel arch liner Superformance

What is your experience with Superformance and their reproduced products? i bought a wheel arch liner for the righthand side which comes in glass fiber for my -95 model and have serious problems fitting it properly, the screw holes are off, the width of the line is off, can't get it to be smooth with the fender line on the inside, there is a gap between the edge and the liner.

 

Front

 

That's about cambelts protection?