diff --git a/Source/PS_Source/StretchSource.h b/Source/PS_Source/StretchSource.h
index 77c9809..e87296c 100644
--- a/Source/PS_Source/StretchSource.h
+++ b/Source/PS_Source/StretchSource.h
@@ -104,6 +104,7 @@ public:
 	void setPreviewDry(bool b);
 	bool isPreviewingDry() const;
 	int m_param_change_count = 0;
+	CriticalSection* getMutex() { return &m_cs; }
 private:
 	CircularBuffer<float> m_stretchoutringbuf{ 1024 * 1024 };
 	AudioBuffer<float> m_file_inbuf;
diff --git a/Source/PluginEditor.cpp b/Source/PluginEditor.cpp
index 1f479a7..ec08b83 100644
--- a/Source/PluginEditor.cpp
+++ b/Source/PluginEditor.cpp
@@ -29,8 +29,8 @@ PaulstretchpluginAudioProcessorEditor::PaulstretchpluginAudioProcessorEditor(Pau
 	: AudioProcessorEditor(&p),
 	m_wavecomponent(p.m_afm,p.m_thumb.get()),
 	processor(p), m_perfmeter(&p),
-    m_wavefilter_tab(TabbedButtonBar::TabsAtTop)
-
+    m_wavefilter_tab(TabbedButtonBar::TabsAtTop),
+	m_free_filter_component(p.getStretchSource()->getMutex())
 {
     //addAndMakeVisible(&m_free_filter_component);
     m_free_filter_component.set_envelope(processor.m_free_filter_envelope);
diff --git a/Source/PluginProcessor.cpp b/Source/PluginProcessor.cpp
index 5f53501..6415efd 100644
--- a/Source/PluginProcessor.cpp
+++ b/Source/PluginProcessor.cpp
@@ -82,9 +82,9 @@ PaulstretchpluginAudioProcessor::PaulstretchpluginAudioProcessor()
 	m_playposinfo.timeInSeconds = 0.0;
 	
     m_free_filter_envelope = std::make_shared<breakpoint_envelope>();
-	m_free_filter_envelope->AddNode({ 0.0,0.5 });
-	m_free_filter_envelope->AddNode({ 1.0,0.5 });
-
+	m_free_filter_envelope->AddNode({ 0.0,0.75 });
+	m_free_filter_envelope->AddNode({ 1.0,0.75 });
+	m_free_filter_envelope->set_reset_nodes(m_free_filter_envelope->get_all_nodes());
     m_recbuffer.setSize(2, 44100);
 	m_recbuffer.clear();
 	if (m_afm->getNumKnownFormats()==0)
diff --git a/Source/envelope_component.cpp b/Source/envelope_component.cpp
index edfe4b3..42c9505 100644
--- a/Source/envelope_component.cpp
+++ b/Source/envelope_component.cpp
@@ -20,7 +20,7 @@
 
 #include "envelope_component.h"
 
-EnvelopeComponent::EnvelopeComponent()
+EnvelopeComponent::EnvelopeComponent(CriticalSection* cs) : m_cs(cs)
 {
 	OnEnvelopeEdited = [](breakpoint_envelope*) {};
 	setWantsKeyboardFocus(true);
@@ -246,7 +246,9 @@ void EnvelopeComponent::mouseDown(const MouseEvent & ev)
 		int r = menu.show();
 		if (r == 1)
 		{
+			m_cs->enter();
 			m_envelope->ResetEnvelope();
+			m_cs->exit();
 		}
 		if (r == 2)
 		{
@@ -274,7 +276,9 @@ void EnvelopeComponent::mouseDown(const MouseEvent & ev)
 			m_bubble.showAt({ ev.x,ev.y, 0,0 }, AttributedString("Can't remove last node"), 3000, false, false);
 			return;
 		}
+		m_cs->enter();
 		m_envelope->DeleteNode(m_node_to_drag);
+		m_cs->exit();
 		m_node_to_drag = -1;
 		OnEnvelopeEdited(m_envelope.get());
 		repaint();
@@ -293,8 +297,10 @@ void EnvelopeComponent::mouseDown(const MouseEvent & ev)
 	{
 		double normx = jmap((double)ev.x, 0.0, (double)getWidth(), m_view_start_time, m_view_end_time);
 		double normy = jmap((double)getHeight() - ev.y, 0.0, (double)getHeight(), m_view_start_value, m_view_end_value);
+		m_cs->enter();
 		m_envelope->AddNode ({ normx,normy, 0.5});
 		m_envelope->SortNodes();
+		m_cs->exit();
 		m_mouse_down = false;
 		OnEnvelopeEdited(m_envelope.get());
 		repaint();
diff --git a/Source/envelope_component.h b/Source/envelope_component.h
index 0bc95b5..415b345 100644
--- a/Source/envelope_component.h
+++ b/Source/envelope_component.h
@@ -32,7 +32,7 @@ class EnvelopeComponent : public Component,
 	//public TooltipClient
 {
 public:
-	EnvelopeComponent();
+	EnvelopeComponent(CriticalSection* cs);
 	~EnvelopeComponent();
 	void paint(Graphics& g) override;
 	void set_envelope(std::shared_ptr<breakpoint_envelope> env, String name = String());
@@ -72,5 +72,6 @@ private:
 	String m_last_tip;
 	BubbleMessageComponent m_bubble;
 	void show_bubble(int x, int y, const envelope_node &node);
+	CriticalSection* m_cs = nullptr;
 	JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR(EnvelopeComponent)
 };