I just reset my 101fd two more times with my method and got the same results. No artifacts post reset. Set rstp to 1 to get superb blacks and called it a day. I do have black rain (minor) but I can live with it.
I truly believe rstp is the cause for red tint, which is why i set it to 1 from the get go after the reset. I leave s1, s2 and s4 at default so I can have headroom if i need to make adjustments in the future.
Pioneer Kuro KRP-500M
Pioneer Kuro PRO-141FD
Pioneer Kuro PRO-111FD x 2
Pioneer Kuro PDP-5020 x 2