diff --git a/core/MassPhaseSpace.h b/core/MassPhaseSpace.h
index b1f47a3..40de52a 100644
--- a/core/MassPhaseSpace.h
+++ b/core/MassPhaseSpace.h
@@ -45,7 +45,7 @@ namespace elSpectro{
       // double max= kine::PhaseSpaceWeightMax(parentM,_masses);//TGenPhaseSpace max . Note this is too high an estimate
 
       //Note PhaseSpaceWeightMaxFromEquDist does not quite get to max, so increase by 10% to be safe....will give warning if event weight is above this....
-      double max= kine::PhaseSpaceWeightMaxFromEquDist(parentM,_masses)*1.1;
+      double max= kine::PhaseSpaceWeightMaxFromEquDist(parentM,_masses)*1.2;
       //double max= kine::PhaseSpaceWeightMaxFromEquDist(parentM,_masses);
       //accept or reject mass combinations until got one
       //as W dependence accounted for elsewere
diff --git a/core/Particle.h b/core/Particle.h
index 12a08ac..ea4f0d7 100644
--- a/core/Particle.h
+++ b/core/Particle.h
@@ -137,7 +137,6 @@ namespace elSpectro{
  	if(minRange>maxRange){//unphysical
 	  std::cout<<"Warning  Particle::DetermineDynamicMass min "<<minRange<<" greater than max "<<maxRange<<" for "<<_pdg<<std::endl;
 	  _dynamicMass=minRange;
-	  Fatal("Particle DetermineDynamicMass","note kinematically possible");
 	  break;
 	}
 	_dynamicMass= _massDist->SampleSingle(minRange,maxRange);