Yes I had figured out what to change. Posted details as well as my tweak values here: https://videogameperfection.com/forums/topic/tips-tweaks-lx3-lx4-lx5-modes/page/4/#post-11885
It’s not perfect, though. I can’t get a sample phase value the eliminates all of the blur (comes about 99% of the way) and I can’t get perfect alignment of the overscan area (it always overshoots or undershoots by a small amount). Perhaps in the future there can be a mode that presets the ideal values for this so others don’t have to go through all the same tweaking.