Here’s the reply from Ikan:
Judging from your photos, it appears the normal wear and tear that occurs on the aluminum body of the black magic camera.
We have a few of these cameras in our possession, and when we attached anything that is metal(Ikan and non Ikan products), it usually leaves a few scratches/marks.
We’ll still be happy to provide refund for your Ikan purchase, but since this isn’t a fault of the ELE-BMC-HDL, we will have to charge a 15% restocking.