diff --git a/src/SHME.ExternalTool/UI/CustomMainForm.Designer.cs b/src/SHME.ExternalTool/UI/CustomMainForm.Designer.cs
index 7f6726f..e8561e2 100644
--- a/src/SHME.ExternalTool/UI/CustomMainForm.Designer.cs
+++ b/src/SHME.ExternalTool/UI/CustomMainForm.Designer.cs
@@ -5837,7 +5837,6 @@ private void InitializeComponent()
             0,
             0,
             0});
-            this.NudFramebufferH.ValueChanged += new System.EventHandler(this.NudFramebuffer_ValueChanged);
             this.NudFramebufferH.Click += new System.EventHandler(this.Selectable_Enter);
             this.NudFramebufferH.Enter += new System.EventHandler(this.Selectable_Enter);
             this.NudFramebufferH.KeyDown += new System.Windows.Forms.KeyEventHandler(this.NudFramebuffer_KeyDown);
@@ -5866,7 +5865,6 @@ private void InitializeComponent()
             0,
             0,
             0});
-            this.NudFramebufferW.ValueChanged += new System.EventHandler(this.NudFramebuffer_ValueChanged);
             this.NudFramebufferW.Click += new System.EventHandler(this.Selectable_Enter);
             this.NudFramebufferW.Enter += new System.EventHandler(this.Selectable_Enter);
             this.NudFramebufferW.KeyDown += new System.Windows.Forms.KeyEventHandler(this.NudFramebuffer_KeyDown);
@@ -5895,7 +5893,6 @@ private void InitializeComponent()
             this.NudFramebufferOfsX.Size = new System.Drawing.Size(55, 20);
             this.NudFramebufferOfsX.TabIndex = 10;
             this.toolTip1.SetToolTip(this.NudFramebufferOfsX, "X offset");
-            this.NudFramebufferOfsX.ValueChanged += new System.EventHandler(this.NudFramebuffer_ValueChanged);
             this.NudFramebufferOfsX.Click += new System.EventHandler(this.Selectable_Enter);
             this.NudFramebufferOfsX.Enter += new System.EventHandler(this.Selectable_Enter);
             this.NudFramebufferOfsX.KeyDown += new System.Windows.Forms.KeyEventHandler(this.NudFramebuffer_KeyDown);
@@ -5914,7 +5911,6 @@ private void InitializeComponent()
             this.NudFramebufferOfsY.Size = new System.Drawing.Size(55, 20);
             this.NudFramebufferOfsY.TabIndex = 20;
             this.toolTip1.SetToolTip(this.NudFramebufferOfsY, "Y offset");
-            this.NudFramebufferOfsY.ValueChanged += new System.EventHandler(this.NudFramebuffer_ValueChanged);
             this.NudFramebufferOfsY.Click += new System.EventHandler(this.Selectable_Enter);
             this.NudFramebufferOfsY.Enter += new System.EventHandler(this.Selectable_Enter);
             this.NudFramebufferOfsY.KeyDown += new System.Windows.Forms.KeyEventHandler(this.NudFramebuffer_KeyDown);
diff --git a/src/SHME.ExternalTool/UI/Events.cs b/src/SHME.ExternalTool/UI/Events.cs
index c586f70..4125d5f 100644
--- a/src/SHME.ExternalTool/UI/Events.cs
+++ b/src/SHME.ExternalTool/UI/Events.cs
@@ -36,6 +36,14 @@ private void AttachEventHandlers()
 
 		StageLoaded += UpdateArrays;
 		StageLoaded += LoadHarryModel;
+
+		// It's unseemly to have the framebuffer picture box populated
+		// with an image on first loading the tool, so don't attach the
+		// ValueChanged handler until after settings are bound.
+		NudFramebufferOfsX.ValueChanged += NudFramebuffer_ValueChanged;
+		NudFramebufferOfsY.ValueChanged += NudFramebuffer_ValueChanged;
+		NudFramebufferW.ValueChanged += NudFramebuffer_ValueChanged;
+		NudFramebufferH.ValueChanged += NudFramebuffer_ValueChanged;
 	}
 	private void DetachEventHandlers()
 	{
@@ -56,6 +64,11 @@ private void DetachEventHandlers()
 
 		StageLoaded -= UpdateArrays;
 		StageLoaded -= LoadHarryModel;
+
+		NudFramebufferOfsX.ValueChanged -= NudFramebuffer_ValueChanged;
+		NudFramebufferOfsY.ValueChanged -= NudFramebuffer_ValueChanged;
+		NudFramebufferW.ValueChanged -= NudFramebuffer_ValueChanged;
+		NudFramebufferH.ValueChanged -= NudFramebuffer_ValueChanged;
 	}
 
 	private void OnStageLoaded(object sender, EventArgs e)
diff --git a/src/SHME.ExternalTool/UI/FramebufferTab.cs b/src/SHME.ExternalTool/UI/FramebufferTab.cs
index a023d07..ab1c564 100644
--- a/src/SHME.ExternalTool/UI/FramebufferTab.cs
+++ b/src/SHME.ExternalTool/UI/FramebufferTab.cs
@@ -93,6 +93,7 @@ private void BtnFramebufferGrab_Click(object sender, EventArgs e)
 
 			bmp.UnlockBits(data);
 
+			BpbFramebuffer.Image?.Dispose();
 			BpbFramebuffer.Image = bmp;
 
 			_framebufferGrabOriginalW = width;