am I the only one with the HL panzer iv turret cupola mounted the WRONG WAY round?

On my second hand panzer iv as well as the newly bought metal turret the commanders cupola was mounted back to front. I didn't recognize it at first sight. After a while I began wondering what the small pointer like piece in front of the cupola might be and what purpose it solves as there was no ooening in the cupola ligning up to this part.
Finally found out that this is the emergency sight and that there should be a viewing port looking straight ahead.
After applying a sharp knife to the glued areas, some carefully masured force and a lot of swearing I managed to get the cupola cut loose from its mount (which is actually just a spin mount) and replace it correctly.
This is how it should NOT look like Now the commander can actually see where he's going

Reinhard