diff --git a/src/drivers/simplix/simplix_trb1/trb1-boxer-trbrs/karwada.xml b/src/drivers/simplix/simplix_trb1/trb1-boxer-trbrs/karwada.xml
index 5d45d03b..204e5ddf 100644
--- a/src/drivers/simplix/simplix_trb1/trb1-boxer-trbrs/karwada.xml
+++ b/src/drivers/simplix/simplix_trb1/trb1-boxer-trbrs/karwada.xml
@@ -126,7 +126,7 @@
   </section>
 
   <section name="Rear Right Suspension">
-    <attnum name="spring" unit="lbs/in" val="2400"/>
+    <attnum name="spring" unit="lbs/in" val="1800"/>
     <attnum name="suspension course" min="0" max="0.25" unit="m" val="0.2"/>
     <attnum name="bellcrank" val="1.5"/>
     <attnum name="packers" min="0" max="10" unit="mm" val="0"/>
@@ -137,7 +137,7 @@
   </section>
 
   <section name="Rear Left Suspension">
-    <attnum name="spring" unit="lbs/in" val="2400"/>
+    <attnum name="spring" unit="lbs/in" val="1800"/>
     <attnum name="suspension course" min="0" max="0.25" unit="m" val="0.2"/>
     <attnum name="bellcrank" val="1.5"/>
     <attnum name="packers" min="0" max="10" unit="mm" val="0"/>
diff --git a/src/drivers/simplix/simplix_trb1/trb1-sector-rb1/karwada.xml b/src/drivers/simplix/simplix_trb1/trb1-sector-rb1/karwada.xml
index b969449e..e3f19b15 100644
--- a/src/drivers/simplix/simplix_trb1/trb1-sector-rb1/karwada.xml
+++ b/src/drivers/simplix/simplix_trb1/trb1-sector-rb1/karwada.xml
@@ -126,7 +126,7 @@
   </section>
 
   <section name="Rear Right Suspension">
-    <attnum name="spring" unit="lbs/in" val="2300"/>
+    <attnum name="spring" unit="lbs/in" val="1500"/>
     <attnum name="suspension course" min="0" max="0.2" unit="m" val="0.2"/>
     <attnum name="bellcrank" val="1.5"/>
     <attnum name="packers" min="0" max="10" unit="mm" val="0"/>
@@ -137,7 +137,7 @@
   </section>
 
   <section name="Rear Left Suspension">
-    <attnum name="spring" unit="lbs/in" val="2300"/>
+    <attnum name="spring" unit="lbs/in" val="1500"/>
     <attnum name="suspension course" min="0" max="0.2" unit="m" val="0.2"/>
     <attnum name="bellcrank" val="1.5"/>
     <attnum name="packers" min="0" max="10" unit="mm" val="0"/>
@@ -166,8 +166,8 @@
     <attnum name="length margin" min="1" max="10" val="2"/>
     <attnum name="scale bump" val="0.341"/>
     <attnum name="scale bump outer" val="0.5115"/>
-    <attnum name="scale brake" val="0.85"/>
-    <attnum name="scale mu" val="1.09"/>
+    <attnum name="scale brake" val="0.8"/>
+    <attnum name="scale mu" val="1.07"/>
     <attnum name="qualy brake" val="0.95"/>
     <attnum name="qualy mu" val="1.09"/>
   </section>
diff --git a/src/drivers/simplix/simplix_trb1/trb1-zaxxon-rb/karwada.xml b/src/drivers/simplix/simplix_trb1/trb1-zaxxon-rb/karwada.xml
index c9101f76..bf13fd66 100644
--- a/src/drivers/simplix/simplix_trb1/trb1-zaxxon-rb/karwada.xml
+++ b/src/drivers/simplix/simplix_trb1/trb1-zaxxon-rb/karwada.xml
@@ -63,7 +63,7 @@
   </section>
 
   <section name="Brake System">
-    <attnum name="front-rear brake repartition" val="0.3"/>
+    <attnum name="front-rear brake repartition" val="0.5"/>
     <attnum name="max pressure" unit="kPa" val="42000"/>
   </section>
 
@@ -104,7 +104,7 @@
   </section>
 
   <section name="Front Right Suspension">
-    <attnum name="spring" unit="lbs/in" val="2400"/>
+    <attnum name="spring" unit="lbs/in" val="2000"/>
     <attnum name="suspension course" min="0" max="0.25" unit="m" val="0.15"/>
     <attnum name="bellcrank" val="1.5"/>
     <attnum name="packers" min="0" max="20" unit="mm" val="0"/>
@@ -115,7 +115,7 @@
   </section>
 
   <section name="Front Left Suspension">
-    <attnum name="spring" unit="lbs/in" val="2400"/>
+    <attnum name="spring" unit="lbs/in" val="2000"/>
     <attnum name="suspension course" min="0" max="0.25" unit="m" val="0.15"/>
     <attnum name="bellcrank" val="1.5"/>
     <attnum name="packers" min="0" max="20" unit="mm" val="0"/>
@@ -126,7 +126,7 @@
   </section>
 
   <section name="Rear Right Suspension">
-    <attnum name="spring" unit="lbs/in" val="3400"/>
+    <attnum name="spring" unit="lbs/in" val="2000"/>
     <attnum name="suspension course" min="0" max="0.25" unit="m" val="0.2"/>
     <attnum name="bellcrank" val="1.5"/>
     <attnum name="packers" min="0" max="10" unit="mm" val="0"/>
@@ -137,7 +137,7 @@
   </section>
 
   <section name="Rear Left Suspension">
-    <attnum name="spring" unit="lbs/in" val="3400"/>
+    <attnum name="spring" unit="lbs/in" val="2000"/>
     <attnum name="suspension course" min="0" max="0.25" unit="m" val="0.2"/>
     <attnum name="bellcrank" val="1.5"/>
     <attnum name="packers" min="0" max="10" unit="mm" val="0"/>
@@ -166,7 +166,7 @@
     <attnum name="length margin" min="1" max="10" val="2"/>
     <attnum name="scale bump" val="0.349"/>
     <attnum name="scale bump outer" val="0.5235"/>
-    <attnum name="scale brake" val="0.8"/>
+    <attnum name="scale brake" val="0.78"/>
     <attnum name="scale mu" val="1.03"/>
     <attnum name="qualy brake" val="0.94"/>
     <attnum name="qualy mu" val="1.06"/>
diff --git a/src/drivers/simplix/src/unitdriver.cpp b/src/drivers/simplix/src/unitdriver.cpp
index 329ad05a..dea695da 100644
--- a/src/drivers/simplix/src/unitdriver.cpp
+++ b/src/drivers/simplix/src/unitdriver.cpp
@@ -2902,9 +2902,9 @@ void TDriver::EvaluateCollisionFlags(
   {
     oTreatTeamMateAsLapper =
 	  OppInfo.GotFlags(F_TEAMMATE | F_REAR)
-	  && OppInfo.State.RelPos > -25
-	  && CarLaps == OppCar->_laps
-	  && CarDamage > OppInfo.TeamMateDamage + 1000;
+	  && OppInfo.State.RelPos > -50
+	  && ((CarLaps <= OppCar->_laps)
+	  || (CarDamage > OppInfo.TeamMateDamage + 1000));
   }
   else
   {
@@ -2915,10 +2915,10 @@ void TDriver::EvaluateCollisionFlags(
   {
     if (oStayTogether > 50
 	  && OppInfo.GotFlags(F_TEAMMATE | F_REAR)
-	  && OppInfo.State.RelPos < -35
 	  && OppInfo.State.RelPos > -oStayTogether
 	  && CarDamage + 1000 > OppInfo.TeamMateDamage)
     {
+	  Coll.LappersBehind |= OppInfo.State.CarDistLat < 0 ? F_LEFT : F_RIGHT;
   	  IsLapper = true;
     }
 
@@ -3407,7 +3407,7 @@ double TDriver::FilterLetPass(double Accel)
   if (oLetPass)
   {
     if (oTreatTeamMateAsLapper)
-      Accel = MIN(Accel, 0.7);
+      Accel = MIN(Accel, 0.3);
 	else
       Accel = MIN(Accel, 0.5);
   }