The tube has been completed between the bases. It's up to you guys to touch up the tunnels however you want.
Also: Stef, this might be a good time to straighten out the path to your tube station. The whole thing has to be chunk-loaded to function and a single chunk loader working in just the x axis would be easier to work with. The kink near the end of the tube is mainly what I'm talking about.

We are each a beautiful and unique snowflake that will melt in hell.
I got the words "jacuzzi" and "yakuza" confused.
Now I'm in hot water with the Japanese mafia.