Well, when I'm wrong, I'm wrong.

http://www.capcomespace.net/dossiers/espace_US/shuttle/ksc/MLP/MLP%20TSM%20dessin%2001.jpg Tail service masts most certainly do have umbilical features. They get quickly retracted in at launch so they may be hard to see but they're there. Here's another angle of the real thing https://www.nasaspaceflight.com/wp-content/uploads/2010/09/A313.jpg

The real big umbilicals for lox venting and cryocooling are on the tower yes, but the shuttle needed these connections as well.

If you can modify the MLP so that it can pass components/ingots/ore to and from containers located in the payload bay of the shuttle (as I've asked for in the comments on your shuttle page) via the connector, it would be absolutely wonderful.

Also, a nitpick: the real Mobile Launching Platform doesn't have the umbilicals. Those are located, along with the crew elevator, on the Mobile Service Tower, which is located at Pad 39A, allowing it to move back when not in use.

Adding an MST to your MLP wouldn't be accurate in that sense, but you've already decided to take artistic liberties to add the umbilical connections to the Mobile Launching Platform, so it's not too much of a stretch.

Stunning work!

Anyone have a video of it in action? Doubt I could load it up myself. :)

lol quickly flicking through the screen shots then land on the last one and think "wow thats quite detailed"

Amazing work :)

Thank you, finally I can build my mobile city... lol....

...yesyesyesyesyesyesyesyesyesyesyes...

@Lagmaster_3000 Paste it on the yellow connector seen in one of the two large parts sticking out on the platform. There's a matching connector on the left side of the shuttle hull, connect the two and you're set.. Pressing 7 on the shuttle disconnects this.

how do u get the shuttle on the platform xD

Oh, wow!

Thanks! I have physical model kits to draw reference from which helps out a ton with these replicas ^^

I tried and failed building this so many times xD you've got it spot on!