New structure for airlocks is available. Much sturdier. It's ever so slightly oval though. If anybody has a fix I'll take it...
All files studio file can be found on bricksafe. Search for "lego-mf-ucs" (not putting the link as I believe lego is hunting for those and requesting they be removed, but I could be wrong).
Still working on the engine. This is requiring some mods to the structure though.