diff --git a/src/config.rs b/src/config.rs
index dd37850..974d60b 100644
--- a/src/config.rs
+++ b/src/config.rs
@@ -78,8 +78,28 @@ impl Default for Config {
 }
 
 pub fn save_config(path: &str, config: &Config) -> Result<(), Box<dyn std::error::Error>> {
-    let contents = serde_yaml::to_string(config)?;
-    fs::write(path, contents)?;
+    let mut s = String::new();
+    s.push_str("# Hardware offset in milliseconds for correcting capture latency.\n");
+    s.push_str(&format!("hardwareOffsetMs: {}\n\n", config.hardware_offset_ms));
+
+    s.push_str("# Enable automatic clock synchronization.\n");
+    s.push_str("# When enabled, the system will perform an initial full sync, then periodically\n");
+    s.push_str("# nudge the clock to keep it aligned with the LTC source.\n");
+    s.push_str(&format!("autoSyncEnabled: {}\n\n", config.auto_sync_enabled));
+
+    s.push_str("# Default nudge in milliseconds for adjtimex control.\n");
+    s.push_str(&format!("defaultNudgeMs: {}\n\n", config.default_nudge_ms));
+
+    s.push_str("# Time-turning offsets. All values are added to the incoming LTC time.\n");
+    s.push_str("# These can be positive or negative.\n");
+    s.push_str("timeturnerOffset:\n");
+    s.push_str(&format!("  hours: {}\n", config.timeturner_offset.hours));
+    s.push_str(&format!("  minutes: {}\n", config.timeturner_offset.minutes));
+    s.push_str(&format!("  seconds: {}\n", config.timeturner_offset.seconds));
+    s.push_str(&format!("  frames: {}\n", config.timeturner_offset.frames));
+    s.push_str(&format!("  milliseconds: {}\n", config.timeturner_offset.milliseconds));
+
+    fs::write(path, s)?;
     Ok(())
 }
 
diff --git a/src/main.rs b/src/main.rs
index 516d482..e265210 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -47,6 +47,9 @@ hardwareOffsetMs: 20
 # nudge the clock to keep it aligned with the LTC source.
 autoSyncEnabled: false
 
+# Default nudge in milliseconds for adjtimex control.
+defaultNudgeMs: 2
+
 # Time-turning offsets. All values are added to the incoming LTC time.
 # These can be positive or negative.
 timeturnerOffset:
@@ -54,6 +57,7 @@ timeturnerOffset:
   minutes: 0
   seconds: 0
   frames: 0
+  milliseconds: 0
 "#;
 
 /// If no `config.yml` exists alongside the binary, write out the default.