Spec-D Tuning tail lights

So I just got these awesome black taillights on sale during the whole cyber Monday crap.
I go to install my right taillight and none of the lights fit. A closer look shows that the little divots where they're supposed to align, are all messed up and backwards. I thought about filing the things open but I'm awaiting a response from the company. If not I'll return the piece.
My left taillight is fine. Everything fits except for the middle light. The backing protrudes too far so it doesn't get a seal. Is it possible to replace the housing to something thinner?
Has anyone else had issued with aftermarket lights?