Nitu

This was the second attempt. This time, the vertical part was too long. i made the horisontal part longer so the helix would be placed distal to 16. I also inserted the CL from the occlusal in the vertical tube. 

This is the last version also left in the mouth. The vertical part is shorter so the patient fell as confortable as it gets. 
I noticed on Rositza's case that the vertical tube of the cross tube is oriented towards the teeth not the other way so I will try the same.
i could not measure the horizontal activation in the mouth so I did this on a piece of paper. The point of ligation is too far back so is not easily accesssible. 
I can also not go too appicaly in the vestible . On the left side the vestible is more shallow. 
Is there a minimum of height for the vertical part of the CL? Because the shorter it gets, the stiffer it gets so the range of activation is small. I feel it is too short for the intended purpose.
What do you think? Thank you!

Unfortunately, in that area, the vertical available space is very limited, you might improve the CL making it composite.