[TamSV]

I didn't have that problem with mine.

From your pic, there's a big gap between the side plastics and the light and I wonder if those two screws at the back of the tail tidy are what's pulling the panels out. I remember I had to bend those corners of the tail tidy in a wee touch to make it a better fit.

Try removing those two screws and see if the panels fall into the correct position. If that works it might just be a case of bending up the corners of the tail tidy and maybe slotting those two holes so the screws are in the right position.