So finally got to fire about 200 rounds on my build last week @ Pala shooting range. Had some issues tho with casing not discharge after firing the round. I have to use the charging handle to clear before taking the next shoot. I do have an adjustable gas tube which I did open up so give it more gas. But still got the same result. I had talked to some and they think it’s my buffer spring. Has anyone had this same issue or have advice?