diff --git a/src/scripts/Profiles/6-12_BIT_RGB/Amiga_2000/Amiga_2000_50Hz_NTSC.txt b/src/scripts/Profiles/6-12_BIT_RGB/Amiga_2000/Amiga_2000_50Hz_NTSC.txt
index ce9e215e..b639e511 100644
--- a/src/scripts/Profiles/6-12_BIT_RGB/Amiga_2000/Amiga_2000_50Hz_NTSC.txt
+++ b/src/scripts/Profiles/6-12_BIT_RGB/Amiga_2000/Amiga_2000_50Hz_NTSC.txt
@@ -1,4 +1,4 @@
-sampling=0,0,0,0,0,0,0,0,0,0,2,0,0,0,0,0,0,3,1,0,55,20,55,20,25,256,256,256
+sampling=0,0,0,0,0,0,0,0,0,0,2,0,0,0,0,0,0,5,1,0,55,20,55,20,25,256,256,256
 geometry=136,35,640,256,712,270,1,2,1,2,14318181,908,5000,313,0,1,1
 palette=RrGgBb_(EGA)
 ffosd_overlay=1
diff --git a/src/scripts/Profiles/6-12_BIT_RGB/Tektronix_571.txt b/src/scripts/Profiles/6-12_BIT_RGB/Tektronix_571.txt
new file mode 100644
index 00000000..bbe1df0d
--- /dev/null
+++ b/src/scripts/Profiles/6-12_BIT_RGB/Tektronix_571.txt
@@ -0,0 +1,4 @@
+sampling=3,3,3,3,3,3,3,0,1,0,2,0,0,0,0,0,0,1,0,0,100,256,100,256,100,256,256,256
+geometry=56,7,640,336,680,340,2,3,0,1,14745600,840,4500,350,1,0,0
+palette=MDA-Hercules
+scanline_level=0
diff --git a/src/scripts/Profiles/6-12_BIT_YUV_Analog/Acorn_Atom.txt b/src/scripts/Profiles/6-12_BIT_YUV_Analog/Acorn_Atom.txt
index cd0d5ef4..8a2177da 100644
--- a/src/scripts/Profiles/6-12_BIT_YUV_Analog/Acorn_Atom.txt
+++ b/src/scripts/Profiles/6-12_BIT_YUV_Analog/Acorn_Atom.txt
@@ -1,4 +1,4 @@
-sampling=3,3,3,3,3,3,3,0,1,0,6,1,1,0,0,4,0,1,0,1,165,124,122,87,100,70,90,256
+sampling=3,3,3,3,3,3,3,0,1,0,6,1,1,0,0,4,0,1,0,1,160,124,122,87,100,70,90,256
 geometry=76,30,272,208,344,256,1,1,3,1,7159090,456,15000,262,0,0,0
 palette=Atom_MKII_Plus
 border_colour=64
diff --git a/src/scripts/Profiles/6-12_BIT_YUV_Analog/U7_TI99-4a_50Hz.txt b/src/scripts/Profiles/6-12_BIT_YUV_Analog/U7_TI99-4a_50Hz.txt
index eec13616..73aae1f8 100644
--- a/src/scripts/Profiles/6-12_BIT_YUV_Analog/U7_TI99-4a_50Hz.txt
+++ b/src/scripts/Profiles/6-12_BIT_YUV_Analog/U7_TI99-4a_50Hz.txt
@@ -1,4 +1,4 @@
-sampling=6,6,6,6,6,6,6,0,1,0,6,1,0,0,1,3,0,2,1,0,71,53,173,145,4,45,129,131
+sampling=6,6,6,6,6,6,6,0,1,0,6,1,0,0,1,3,0,2,1,0,71,50,166,142,4,45,143,129
 geometry=52,55,256,208,280,270,1,1,3,1,5369317,342,5000,312,4,0,0
 palette=TI-99-4a
 border_colour=1