Horrible alignment - Luth-AR AR-15 Adjustable Gas Block .750 ID

I tried everything trying to set a roll pin into this piece of garbage. Pin would pass through the first hole and the gas tube. However, it would always become misaligned and would not pass through the final hole. After several attempts, several more pins, some drilling, some boring, and cleaning, I finally came to the conclusion that it wasn't machined accurately enough. This became evident when I just went and got a different gas block and the pin seated on the first attempt. Will not be buying this any further.