diff --git a/src/config/config.h b/src/config/config.h
index 9499579..2eb4a04 100644
--- a/src/config/config.h
+++ b/src/config/config.h
@@ -178,7 +178,7 @@ static constexpr AxisConfig idler = {
     .iHold = 23, /// 398mA
     .stealth = false,
     .stepsPerUnit = (200 * 16 / 360.),
-    .sg_thrs = 8,
+    .sg_thrs = 5,
 };
 
 /// Idler motion limits
@@ -212,7 +212,7 @@ static constexpr U_deg_s idlerFeedrate = 300._deg_s;
 // static constexpr int8_t tmc2130_sg_thrs = 3;
 // static_assert(tmc2130_sg_thrs >= -64 && tmc2130_sg_thrs <= 63, "tmc2130_sg_thrs out of range");
 
-static constexpr uint32_t tmc2130_coolStepThreshold = 5000; ///< step-based 20bit uint
+static constexpr uint32_t tmc2130_coolStepThreshold = 450; ///< step-based 20bit uint
 static_assert(tmc2130_coolStepThreshold <= 0xfffff, "tmc2130_coolStepThreshold out of range");
 
 static constexpr uint32_t tmc2130_PWM_AMPL = 240;