Set screw holes not centered - Luth-AR AR-15 Adjustable Gas Block .750 ID

The set screw holes are not centered and not even. One is right up to the edge of the flat area on the bottom and the other is partially off the edge. Holes are not even round. One set screws would start and the other wouldn't at all. I didn't open it for a couple months after I got it and I was past the window to return it. I reached out to Luth-AR multiple times. Sent them pictures and they wouldn't do anything. They told me to return it. I wouldn't trust anything from this company.