diff --git a/src/testflockfev.bzz b/src/testflockfev.bzz
index a212423..4690009 100644
--- a/src/testflockfev.bzz
+++ b/src/testflockfev.bzz
@@ -16,7 +16,7 @@ TARGET_ALTITUDE = 5.0
  
 # Lennard-Jones parameters
 TARGET     = 10.0	#0.000001001
-EPSILON    = 10.0	#0.001
+EPSILON    = 20.0	#0.001
  
 # Lennard-Jones interaction magnitude
 function lj_magnitude(dist, target, epsilon) {
@@ -41,7 +41,7 @@ function hexagon() {
   if(neighbors.count() > 0)
     math.vec2.scale(accum, 1.0 / neighbors.count())
   # Move according to vector
-  print("Robot ", id, "must push ",accum.length, "; ", accum.angle)
+  #print("Robot ", id, "must push ",accum.length, "; ", accum.angle)
   uav_moveto(accum.x, accum.y)
 }
  
@@ -55,7 +55,7 @@ function hexagon() {
 # Constants
 #
 BARRIER_VSTIG = 1
-ROBOTS = 3 # number of robots in the swarm
+ROBOTS = 4 # number of robots in the swarm
 
 #
 # Sets a barrier