diff --git a/src/components/ConcernementMapItem.vue b/src/components/ConcernementMapItem.vue
index 22771d4..07984b0 100644
--- a/src/components/ConcernementMapItem.vue
+++ b/src/components/ConcernementMapItem.vue
@@ -489,7 +489,9 @@ export default {
         Matter.Body.setPosition(this.body, this.pos);
 
         // add init velocity
-        this.setInitBodyVelocity()
+        // INFO no need of init velocity as each mapitems are repeling the each others
+        // this.setInitBodyVelocity()
+        
         // console.log('concernementItem mass', this.body.mass);
         Matter.Composite.add(this.matterEngine.world, this.body);
         // console.log('concernement body', this.body);
@@ -500,7 +502,7 @@ export default {
       }
     },
     setInitBodyVelocity(){
-      let delta = 50;
+      let delta = 5;
       Matter.Body.setVelocity(this.body, {
         x: -delta + Math.random()*delta*2,
         y: -delta + Math.random()*delta*2
@@ -1883,10 +1885,10 @@ export default {
           ? this.canvas.width - pseudo_center_x
           : pseudo_center_x;
         
-        // X force decrsinsing near the center
+        // X force decreasing near the center
         // max and min force
         let xminf = 0;
-        let xmaxf = 1 + Math.random()*4;
+        let xmaxf = 1;// + Math.random()*4;
         // scale factor
         let xscale = (xmaxf-xminf) / (maxp-minp);
         let x_force = Math.exp(xminf + xscale*(dist-minp)) * dir;
@@ -1904,7 +1906,7 @@ export default {
         
         // Friction air fa (increasing near the center)
         let fa_minf = 0;
-        let fa_maxf = 6;
+        let fa_maxf = 20;
         // scale factor
         let fa_scale = (fa_maxf-fa_minf) / (maxp-minp);
         let fa = Math.exp(fa_minf + fa_scale*(dist-minp)*-1);
@@ -1960,7 +1962,8 @@ export default {
 
         // X max and min force
         let xminf = 0;
-        let xmaxf = 4 + Math.random()*3;
+        // let xmaxf = 4 + Math.random()*3;
+        let xmaxf = 2 + Math.random()*2;
         // scale factor
         let xscale = (xmaxf-xminf) / (maxp-minp);
         
@@ -1970,7 +1973,8 @@ export default {
         // y_velocity = Math.random() > 0.5 ? -y_velocity : y_velocity;
         // X max and min force
         let yminf = 1;
-        let ymaxf = 2 + Math.random()*4;
+        // let ymaxf = 2 + Math.random()*4;
+        let ymaxf = 4 + Math.random()*2;
         // scale factor
         let yscale = (ymaxf-yminf) / (maxp-minp);