About this detail of the Tiger
The roof of the Tiger's turret was increased in thickness from 25mm to 40mm in March 1944. Hachette's Tiger Tank kit has the 40mm roof; this is obvious from the lack of a frame surrounding the loader's hatch.
The real hatch was countersunk into the 40mm roof. As you can see in this photo, it did not offer any raised edge that could be struck by shell fragments.
Photos of the roof in the Hachette kit seem to show that the hatch lies on top of the roof rather than inside it.
You could improve the Hachette Tiger Tank's accuracy by sinking the hinges and the hatch into the roof.