I printed a prototype of the frames.

A couple of immediate problems:

-I was too conservative with the frame thickness, but not width.

-Lens inset was too shallow.

-Arm pivots were too small.

-After scaling the arm pivots, I choked the arm size to .75D

-Extended the arm stops.

-Extended the interior of the contact rotation point for arms.

<Note: Hinges are donated from model 10, scaled up.

So; the new design:

Error in scale up, fixed.

There is a small error in the pivot support still, but its not worth fixing at this time. Arms are still the spring type, not sure if it'll actually work.