Zero length springs with shells

Hi all,

I'm having trouble to connect shell elements with zero-length springs. 

Followed the scissor example file, I'm able to connect beam elements with zero-length springs, but the same method doesn't seem to work with shell elements. 

I've attached a simple example comparison. It seems like the coincident nodes of shell elements are always joined directly, ignoring the points list input to the Assemble Model component. 

Using short springs with a small gap between shells works, but it would be great to be able to use zero-length springs.

Any help would be appreciated!

Thanks,

Shamil