I sorta did the same thing in the end. Love the shield, hate the support.I would say RMA like everyone else, didn't feel like it would help me in the long run, due to the Shield not being durable at all.
I had the same problem, and have seen this 3 other times. My shield was broken brand new, I didn't even know it at the time. The screen it self could move way to much from left to right. all the screws were there. Got my hands on another and found the screen was very sturdy. Then a friend of my ask me to fix his due to this problem, but he said he had dropped his from about a foot. Which is understandable if you drop it.
The left screw was the problem for me. but i did both screws to make it symmetry.
What I did, was took it apart filled both screw holes with super glue and drilled it out, you can now see the screws on the front. Then I tapped it with a 2.5mm treads. and added the screws.
Hopes this helps someone.
Thanks.
