Never Assume.
So today I actually removed the top hexagonal part of the chamber from the bottom cylenrical part, and guess what I found.
The gasket on the lid is a different diameter than the gasket on the bottom cylender. Which means…
We can place the lid on the cylinder and it might just work.
Also 100th post!
Prometheus Fusion Perfection 
Looked at the pictures of the actual chamber, never mind the last post.