diff --git a/boards/shields/charybdis/charybdis_3610.dtsi b/boards/shields/charybdis/charybdis_3610.dtsi
index 2edc2554..4f0ced52 100644
--- a/boards/shields/charybdis/charybdis_3610.dtsi
+++ b/boards/shields/charybdis/charybdis_3610.dtsi
@@ -44,7 +44,7 @@
         reg = <0>;
         spi-max-frequency = <2000000>;
         irq-gpios = <&gpio0 6 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>;
-        cpi = <3200>;
+        cpi = <2400>;
         evt-type = <INPUT_EV_REL>;
         x-input-code = <INPUT_REL_X>;
         y-input-code = <INPUT_REL_Y>;
diff --git a/config/charybdis.keymap b/config/charybdis.keymap
index ffef41ab..c4f15942 100644
--- a/config/charybdis.keymap
+++ b/config/charybdis.keymap
@@ -9,12 +9,12 @@
     trackball_listener {
         compatible = "zmk,input-behavior-listener";
         device = <&vtrackball>;
-        layers = <0>;
+        layers = <0 2 3 4>;
         evt-type = <INPUT_EV_REL>;
         x-input-code = <INPUT_REL_X>;
         y-input-code = <INPUT_REL_Y>;
         scale-multiplier = <1>;
-        scale-divisor = <6>;
+        scale-divisor = <4>;
         bindings = <&ib_toggle_layer 5>;
     };
 
@@ -37,7 +37,7 @@
         x-input-code = <INPUT_REL_MISC>;
         y-input-code = <INPUT_REL_WHEEL>;
         y-invert;
-        bindings = <&ib_wheel_scaler 1 8>;
+        bindings = <&ib_wheel_scaler 1 16>;
     };
 
     ib_wheel_scaler: ib_wheel_scaler {