Another update, I opened up the ejection port opening even more, removed the door. Now there is no more brass being damaged. I went to range today and shot 50 plus rounds. The 92% loads were dropping at 3 to 4 o'clock , the 96 % loads were coming out at 2 o'clock. I'm going to change from the DPMS spring to the Armalite spring then i'll add some buffer weight if that doesn't work. The gun ran good today ,last round hold open worked every time. No problems failing to chamber, no FTE's . I'll take some picture tommorrow.