diff --git a/src/formats/victor9k_ss.textpb b/src/formats/victor9k_ss.textpb
index 073acb7..1b72f03 100644
--- a/src/formats/victor9k_ss.textpb
+++ b/src/formats/victor9k_ss.textpb
@@ -7,12 +7,14 @@ image_reader {
 		sides: 1
 		trackdata {
 			sector_size: 512
+			sector_range {
+				start_sector: 0
+			}
 		}
 		trackdata {
 			track: 0
 			up_to_track: 3
 			sector_range {
-				start_sector: 1
 				sector_count: 19
 			}
 		}
@@ -20,7 +22,6 @@ image_reader {
 			track: 4
 			up_to_track: 15
 			sector_range {
-				start_sector: 1
 				sector_count: 18
 			}
 		}
@@ -28,7 +29,6 @@ image_reader {
 			track: 16
 			up_to_track: 26
 			sector_range {
-				start_sector: 1
 				sector_count: 17
 			}
 		}
@@ -36,7 +36,6 @@ image_reader {
 			track: 27
 			up_to_track: 37
 			sector_range {
-				start_sector: 1
 				sector_count: 16
 			}
 		}
@@ -44,7 +43,6 @@ image_reader {
 			track: 38
 			up_to_track: 48
 			sector_range {
-				start_sector: 1
 				sector_count: 15
 			}
 		}
@@ -52,7 +50,6 @@ image_reader {
 			track: 49
 			up_to_track: 59
 			sector_range {
-				start_sector: 1
 				sector_count: 14
 			}
 		}
@@ -60,7 +57,6 @@ image_reader {
 			track: 60
 			up_to_track: 70
 			sector_range {
-				start_sector: 1
 				sector_count: 13
 			}
 		}
@@ -68,7 +64,6 @@ image_reader {
 			track: 71
 			up_to_track: 79
 			sector_range {
-				start_sector: 1
 				sector_count: 12
 			}
 		}
@@ -82,12 +77,14 @@ image_writer {
 		sides: 1
 		trackdata {
 			sector_size: 512
+			sector_range {
+				start_sector: 0
+			}
 		}
 		trackdata {
 			track: 0
 			up_to_track: 3
 			sector_range {
-				start_sector: 1
 				sector_count: 19
 			}
 		}
@@ -95,7 +92,6 @@ image_writer {
 			track: 4
 			up_to_track: 15
 			sector_range {
-				start_sector: 1
 				sector_count: 18
 			}
 		}
@@ -103,7 +99,6 @@ image_writer {
 			track: 16
 			up_to_track: 26
 			sector_range {
-				start_sector: 1
 				sector_count: 17
 			}
 		}
@@ -111,7 +106,6 @@ image_writer {
 			track: 27
 			up_to_track: 37
 			sector_range {
-				start_sector: 1
 				sector_count: 16
 			}
 		}
@@ -119,7 +113,6 @@ image_writer {
 			track: 38
 			up_to_track: 48
 			sector_range {
-				start_sector: 1
 				sector_count: 15
 			}
 		}
@@ -127,7 +120,6 @@ image_writer {
 			track: 49
 			up_to_track: 59
 			sector_range {
-				start_sector: 1
 				sector_count: 14
 			}
 		}
@@ -135,7 +127,6 @@ image_writer {
 			track: 60
 			up_to_track: 70
 			sector_range {
-				start_sector: 1
 				sector_count: 13
 			}
 		}
@@ -143,7 +134,6 @@ image_writer {
 			track: 71
 			up_to_track: 79
 			sector_range {
-				start_sector: 1
 				sector_count: 12
 			}
 		}
@@ -166,7 +156,7 @@ encoder {
 			max_cylinder: 3
 			original_period_ms: 237.9
 			sector_range {
-				start_sector: 1
+				start_sector: 0
 				sector_count: 19
 			}
 		}
@@ -176,7 +166,6 @@ encoder {
 			max_cylinder: 15
 			original_period_ms: 224.5
 			sector_range {
-				start_sector: 1
 				sector_count: 18
 			}
 		}
@@ -186,7 +175,6 @@ encoder {
 			max_cylinder: 26
 			original_period_ms: 212.2
 			sector_range {
-				start_sector: 1
 				sector_count: 17
 			}
 		}
@@ -196,7 +184,6 @@ encoder {
 			max_cylinder: 37
 			original_period_ms: 199.9
 			sector_range {
-				start_sector: 1
 				sector_count: 16
 			}
 		}
@@ -206,7 +193,6 @@ encoder {
 			max_cylinder: 48
 			original_period_ms: 187.6
 			sector_range {
-				start_sector: 1
 				sector_count: 15
 			}
 		}
@@ -216,7 +202,6 @@ encoder {
 			max_cylinder: 59
 			original_period_ms: 175.3
 			sector_range {
-				start_sector: 1
 				sector_count: 14
 			}
 		}
@@ -226,7 +211,6 @@ encoder {
 			max_cylinder: 70
 			original_period_ms: 163.0
 			sector_range {
-				start_sector: 1
 				sector_count: 13
 			}
 		}
@@ -236,7 +220,6 @@ encoder {
 			max_cylinder: 79
 			original_period_ms: 149.6
 			sector_range {
-				start_sector: 1
 				sector_count: 12
 			}
 		}