diff --git a/gtk2_ardour/midi_region_view.cc b/gtk2_ardour/midi_region_view.cc
index 95474201b6..56cf9399df 100644
--- a/gtk2_ardour/midi_region_view.cc
+++ b/gtk2_ardour/midi_region_view.cc
@@ -170,6 +170,20 @@ MidiRegionView::init (bool /*wfd*/)
 	connect_to_diskstream ();
 }
 
+void
+MidiRegionView::set_model (std::shared_ptr<ARDOUR::MidiModel> model)
+{
+	MidiView::set_model (model);
+
+	region_muted ();
+	region_sync_changed ();
+	region_resized (ARDOUR::bounds_change);
+	region_locked ();
+
+	set_colors ();
+	reset_width_dependent_items (_pixel_width);
+}
+
 bool
 MidiRegionView::display_is_enabled () const
 {
@@ -642,24 +656,8 @@ MidiRegionView::~MidiRegionView ()
 void
 MidiRegionView::reset_width_dependent_items (double pixel_width)
 {
-	RegionView::reset_width_dependent_items(pixel_width);
-
-	view_changed ();
-
-	bool hide_all = false;
-	PatchChanges::iterator x = _patch_changes.begin();
-	if (x != _patch_changes.end()) {
-		hide_all = x->second->width() >= _pixel_width;
-	}
-
-	if (hide_all) {
-		for (; x != _patch_changes.end(); ++x) {
-			x->second->hide();
-		}
-	}
-
-	move_step_edit_cursor (_step_edit_cursor_position);
-	set_step_edit_cursor_width (_step_edit_cursor_width);
+	MidiView::reset_width_dependent_items (pixel_width);
+	RegionView::reset_width_dependent_items (pixel_width);
 }
 
 void
diff --git a/gtk2_ardour/midi_region_view.h b/gtk2_ardour/midi_region_view.h
index 39c85d4bdf..8968e4b9b0 100644
--- a/gtk2_ardour/midi_region_view.h
+++ b/gtk2_ardour/midi_region_view.h
@@ -112,6 +112,7 @@ public:
 	{ return midi_view()->midi_view(); }
 
 	void set_height (double);
+	void set_model (std::shared_ptr<ARDOUR::MidiModel>);
 
 	inline ARDOUR::ColorMode color_mode() const { return midi_view()->color_mode(); }
 
diff --git a/gtk2_ardour/midi_view.cc b/gtk2_ardour/midi_view.cc
index 31951c6e14..71eb64ceac 100644
--- a/gtk2_ardour/midi_view.cc
+++ b/gtk2_ardour/midi_view.cc
@@ -251,17 +251,6 @@ MidiView::set_model (std::shared_ptr<MidiModel> m)
 
 	//set_height (trackview.current_height());
 
-#warning paul pianorule needs these fixed
-/* XXXX
-	region_muted ();
-	region_sync_changed ();
-	region_resized (ARDOUR::bounds_change);
-	//region_locked ();
-
-	set_colors ();
-	reset_width_dependent_items (_pixel_width);
-*/
-
 	_model->ContentsChanged.connect (connections_requiring_model, invalidator (*this), std::bind (&MidiView::model_changed, this), gui_context());
 
 	_midi_track->playback_filter().ChannelModeChanged.connect (connections_requiring_model, invalidator (*this),
diff --git a/gtk2_ardour/midi_view.h b/gtk2_ardour/midi_view.h
index 4d22bdbfee..32355d242e 100644
--- a/gtk2_ardour/midi_view.h
+++ b/gtk2_ardour/midi_view.h
@@ -118,9 +118,9 @@ class MidiView : public virtual sigc::trackable, public LineMerger
 	virtual GhostRegion* add_ghost (TimeAxisView&) { return nullptr; }
 	virtual std::string get_modifier_name() const;
 
-	void set_region (std::shared_ptr<ARDOUR::MidiRegion>);
-	void set_track (std::shared_ptr<ARDOUR::MidiTrack>);
-	void set_model (std::shared_ptr<ARDOUR::MidiModel>);
+	virtual void set_region (std::shared_ptr<ARDOUR::MidiRegion>);
+	virtual void set_track (std::shared_ptr<ARDOUR::MidiTrack>);
+	virtual void set_model (std::shared_ptr<ARDOUR::MidiModel>);
 
 	NoteBase* add_note(const std::shared_ptr<NoteType> note, bool visible);