Hello @keeferdog
try to call ATS ( Acoustic Panels by ATS Acoustics )
They help me a lot. I used REW to determine what my room was doing and used that information to help ATS tech support better understand my situation,
If you do NOT have REW, ATS tech support will also help you. I had done 2 rooms, and they were spot on. if you look at my profile pic, you will see the ATS treatments they had advised me to use
Good luck