I am attempting tp fit S5 vert tail lights in my S4 vert. All the holes line up perfectly, the corner sections are fine, but I can't get the entire thing to sit
flush.
Is there something I'm overlooking, or to I need to make a 'technical adjustment' to the metal inside the trunk for a proper fit?

 

Never mine, found a link in case anyone else needs it//

http://www.aaroncake.net/RX-7/taillights.htm