I've busy and made some great changes.
Added a Richard Gray Power Company RGPC 400, and some bass traps and side panels from https://foamforyou.com/residential-foam-products/noise-control-foam.html.
WOW. The hot high end has mellowed, the mid bass bloom is gone, the deep bass is better and just everything is better! but certainly different now.
Glad to have improved two issues with these simple tweaks.