It seems like it's not the case here. I tried screwing it in upside down and it goes all the way through perfectly fine. When I try to screw it in the correct way, it seems like the threads don't fit correctly. It goes in without even spinning, and pulls right out with just a bit of a pull. I'm starting to think this is just a DOA :/ Any other suggestions?
I had a problem with mine also. I took the "chimney" off of the round cylinder bottom.. And screwed the chimney into the top section of the tank.
Fill with liquid see how she works!