diff --git a/src/serial_input.rs b/src/serial_input.rs
index 10c3626..b65cd5f 100644
--- a/src/serial_input.rs
+++ b/src/serial_input.rs
@@ -60,6 +60,7 @@ mod tests {
     use super::*;
     use std::sync::mpsc;
     use crate::sync_logic::LtcState;
+    use num_rational::Ratio;
     use regex::Regex;
 
     fn get_ltc_regex() -> Regex {
@@ -119,7 +120,7 @@ mod tests {
         assert_eq!(st.free_count, 1);
         let received_frame = rx.try_recv().unwrap();
         assert_eq!(received_frame.status, "FREE");
-        assert_eq!(received_frame.frame_rate, 29.97);
+        assert_eq!(received_frame.frame_rate, Ratio::new(30000, 1001));
     }
 
     #[test]
diff --git a/src/sync_logic.rs b/src/sync_logic.rs
index 06b14f0..630e879 100644
--- a/src/sync_logic.rs
+++ b/src/sync_logic.rs
@@ -173,9 +173,9 @@ impl LtcState {
 pub fn get_sync_status(delta_ms: i64, config: &Config) -> &'static str {
     if config.timeturner_offset.is_active() {
         "TIMETURNING"
-    } else if delta_ms.abs() <= 1 {
+    } else if delta_ms.abs() <= 8 {
         "IN SYNC"
-    } else if delta_ms > 2 {
+    } else if delta_ms > 10 {
         "CLOCK AHEAD"
     } else {
         "CLOCK BEHIND"
diff --git a/src/system.rs b/src/system.rs
index 0ce73aa..7d089e6 100644
--- a/src/system.rs
+++ b/src/system.rs
@@ -1,6 +1,6 @@
 use crate::config::Config;
 use crate::sync_logic::LtcFrame;
-use chrono::{DateTime, Duration as ChronoDuration, Local, NaiveTime, TimeZone};
+use chrono::{DateTime, Duration as ChronoDuration, Local, TimeZone};
 use num_rational::Ratio;
 use std::process::Command;