Problems lining up modules for a hex ring space station

[Greylin]

I have been trying forever to create a space station in LKO that is essentially a ring construction. It consists of 2 modules - 7 hubs and 12 spokes.  Each hub module is a short fuel tank oriented vertically with 6 shorter fuel tanks oriented horizontally and mounted radially (giving you the 60 degree angle between each spoke).  Clampotron Sr. docking ports on the ends. Each spoke module is two of the giant fuel tanks with big monopropellant tanks and Clampotrons on each end.

The theory is to dock 6 of the spokes (https://imgur.com/WYrndg6)to a central hub (https://imgur.com/vhWLyd8),  then dock a hub at the end of a spoke,  the just alternate spoke- hub- spoke around the edge to compete the ring. 

The problem I am having is I can't get the external hubs aligned perfectly (https://imgur.com/LZ6KC5z),  and I can only get about 3 external hubs/ spokes assembled before my next module just won't fit. https://imgur.com/gN8dz40

Has anyone else managed something like this and,   if so,  how did you get everything to align and fit?

Thanks for the advice!

 

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Trying to add screen shots....

 

Edited February 4, 2018 by Greylin
Added Screen Shots

[Tex_NL]

Check my signature.

[Spricigo]

 

You know that, due to the tree structure of craft files, you cannot have closed rings on stock KSP?

 

That means that some of your 'connections' are just the the magnetic forces keeping  docking ports near each other. 

[Tex_NL]

@Greylin This mod was released just a few hours ago. I have not tested it myself but it could be your golden ticket.

 

[Greylin]

 Call me traditional, but I was trying to do this 100% stock career mode with no cheats. 

@Spricigo all of the connections I have in my structure show me the "Undock" option when I right click on them.

This is disappointing news.   I'm taking another attempt and trying super hard to line everything up perfectly. I've got one more solid connecting than before. 

Thanks for all the advice!

[foamyesque]

You can in fact create closed rings with docking ports. However if you require *exact* alignment, you want to use a tri-adapter hooked into three docking ports. That should lock you to exactly the same orientation every time.

[qzgy]

17 minutes ago, foamyesque said:

You can in fact create closed rings with docking ports. However if you require *exact* alignment, you want to use a tri-adapter hooked into three docking ports. That should lock you to exactly the same orientation every time.

I would also think a double adapter could work, could it?

[foamyesque]

Just now, qzgy said:

I would also think a double adapter could work, could it?

 

Probably, since you only really need roll lock, but a tri-adapter will be sturdier, and would guarantee you're locked in all three axis if the docking ports themselves didn't already take care of yaw/pitch.

[peteletroll]

11 hours ago, Tex_NL said:

This mod was released just a few hours ago. I have not tested it myself but it could be your golden ticket.

Unfortunately it doesn't work for large docking ports yet...