@ricred1 ,
Good to know that. I did not realize that you also use tri-traps in the corners, and that too similar color as I do. I have ordered 4 additional tri-traps for the back corners. I was advised to go with 2 more 4A Alpha (2D) on front wall and 2 6A Alpha (2D) on the back wall, based on my current room setup. Once I install the rear tri-traps I will see how it changes the acoustics and then proceed.
Would love to see more pictures of your excellent system.