I have some interesting news.
I was able to reach pg_ice's and qwknuf6's level. No glow at 5% white window and the blacks match the bezel! Stock values
VOL RST P: 003
VOL YKNOFS1 D: 138
VOL YKNOFS3 D: 128
VOL YKNOFS4 D: 149New values
VOL RSTP: same
VOL YKNOFS1 D: 60
VOL YKNOFS3 D: 50
VOL YKNOFS4 D: 71
The only issue I have is the black rain. It appears only when I'm switching content.
Display - Pioneer KRP-500M (Tweaked)
A/V Processor - Mcintosh MX121
Sources - Mcintosh MVP881, Oppo BDP-103, Pioneer BDP-23FD, Apple TV
Amp/Controller - Mcintosh MC303, MC207, MPC1500
Speakers/Subwoofer - B&W 803D2, HTM2D, 805D2, JL Audio Fathom F112