diff --git a/rp2040/src/axis.rs b/rp2040/src/axis.rs
index 5865f27..7493d91 100644
--- a/rp2040/src/axis.rs
+++ b/rp2040/src/axis.rs
@@ -174,13 +174,14 @@ impl VirtualAxis {
         } else if (self.value != AXIS_CENTER && !up_pressed && !down_pressed)
             || (up_pressed && down_pressed)
         {
-            // Return to center when no buttons pressed or both pressed
-            if self.value < AXIS_CENTER + self.step {
-                self.value += self.step;
-            } else if self.value > AXIS_CENTER - self.step {
-                self.value -= self.step;
+            // Return to center when no buttons are pressed or both are pressed
+            let before = self.value;
+            if self.value > AXIS_CENTER {
+                self.value = self.value.saturating_sub(self.step);
+            } else if self.value < AXIS_CENTER {
+                self.value = self.value.saturating_add(self.step);
             }
-            activity = true;
+            activity |= self.value != before;
         }
 
         activity
diff --git a/rp2040/src/hardware.rs b/rp2040/src/hardware.rs
index c569908..97f3c20 100644
--- a/rp2040/src/hardware.rs
+++ b/rp2040/src/hardware.rs
@@ -79,9 +79,6 @@ pub mod timers {
     /// Status LED update interval (250ms)
     pub const STATUS_LED_INTERVAL_MS: u32 = 250;
 
-    /// Millisecond timer interval (1ms)
-    pub const MS_INTERVAL_MS: u32 = 1;
-
     /// Scan timer interval (200us)
     pub const SCAN_INTERVAL_US: u32 = 200;
 
diff --git a/rp2040/src/main.rs b/rp2040/src/main.rs
index d58d47b..8d796f5 100644
--- a/rp2040/src/main.rs
+++ b/rp2040/src/main.rs
@@ -271,8 +271,7 @@ fn main() -> ! {
     let mut status_led_count_down = timer.count_down();
     status_led_count_down.start(timers::STATUS_LED_INTERVAL_MS.millis());
 
-    let mut ms_count_down = timer.count_down();
-    ms_count_down.start(timers::MS_INTERVAL_MS.millis());
+    // Removed unused millisecond countdown timer
 
     let mut scan_count_down = timer.count_down();
     scan_count_down.start(timers::SCAN_INTERVAL_US.micros());
diff --git a/rp2040/src/usb_report.rs b/rp2040/src/usb_report.rs
index ede9c9e..b6f14e2 100644
--- a/rp2040/src/usb_report.rs
+++ b/rp2040/src/usb_report.rs
@@ -62,8 +62,8 @@ pub fn get_joystick_report(
     let mut slider: i16 = axis_12bit_to_i16(ADC_MIN);
     let mut hat: u8 = 8; // Hat center position
 
-    // Virtual axis control: Disables z and rx axis and uses right gimbal Y axis to control
-    // slider axis. Values from center stick to max or min will be recalculated to min to max.
+    // Virtual axis control: Disables z axis and uses right gimbal X axis to control
+    // the slider axis. Values from center stick to max or min will be recalculated to min to max.
     if *vt_enable {
         if axis[GIMBAL_AXIS_RIGHT_X].value >= AXIS_CENTER {
             slider = axis_12bit_to_i16(remap(
@@ -379,4 +379,4 @@ mod tests {
         assert_eq!(report.buttons & (1 << 7), 1 << 7); // Button 8
         assert_eq!(report.hat, 0); // HAT up direction
     }
-}
\ No newline at end of file
+}