I think Rhino has a video that talks about those specific parts being plastic so they able to flex and also serviceable if they do fail.
Edit: Here's the video
It looks like you may the earlier Foxwing made by OZ? I believe the Batwing is a different and designed by Rhino.
I just got tracking on my Batwing. I'll give you guys my thoughts after it is installed.
Cheers!