diff --git a/CHANGELOG.md b/CHANGELOG.md
index 894ea75..f8596af 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,3 +10,4 @@
 - v.0.4.0 - Added `GridfinityRuggedBox` class and `ruggedbox` console script. Various other improvements.
 - v.0.4.1 - Fixed docstring in `__init__.py`
 - v.0.4.2 - Improved script automatic renaming
+- v.0.4.3 - Fixed regression bug with using multilevel extrusion functions from cq-kit
diff --git a/README.md b/README.md
index 12a16dc..e0b8d39 100644
--- a/README.md
+++ b/README.md
@@ -43,7 +43,7 @@ Assuming these dependencie are installed, you can install **cq-gridfinity** usin
 $ pip install cqgridfinity
 ```
 
-The **cq-gridfinity** package can be installed directly from the source code:
+Alternatively, the **cq-gridfinity** package can be installed directly from the source code:
 
 ```bash
 $ git clone https://github.com/michaelgale/cq-gridfinity.git
@@ -597,6 +597,7 @@ b1.save_step_file()
 - v.0.4.0 - Added `GridfinityRuggedBox` class and `ruggedbox` console script. Various other improvements.
 - v.0.4.1 - Fixed docstring in `__init__.py`
 - v.0.4.2 - Improved script automatic renaming
+- v.0.4.3 - Fixed regression bug with using multilevel extrusion functions from cq-kit
 
 # References
 
diff --git a/cqgridfinity/__init__.py b/cqgridfinity/__init__.py
index 6b9814e..89db65c 100644
--- a/cqgridfinity/__init__.py
+++ b/cqgridfinity/__init__.py
@@ -4,7 +4,7 @@
 
 # fmt: off
 __project__ = 'cqgridfinity'
-__version__ = '0.4.2'
+__version__ = '0.4.3'
 # fmt: on
 
 VERSION = __project__ + "-" + __version__
diff --git a/cqgridfinity/gf_box.py b/cqgridfinity/gf_box.py
index 84f7ad5..ff15f24 100644
--- a/cqgridfinity/gf_box.py
+++ b/cqgridfinity/gf_box.py
@@ -27,7 +27,7 @@
 
 import cadquery as cq
 from cqkit import HasZCoordinateSelector, VerticalEdgeSelector, FlatEdgeSelector
-from cqkit.cq_helpers import rounded_rect_sketch, composite_from_pts
+from cqkit.cq_helpers import rounded_rect_sketch, composite_from_pts, size_3d, recentre
 from cqgridfinity import *
 
 
diff --git a/cqgridfinity/gf_obj.py b/cqgridfinity/gf_obj.py
index 26c3776..f3883cd 100644
--- a/cqgridfinity/gf_obj.py
+++ b/cqgridfinity/gf_obj.py
@@ -312,7 +312,12 @@ def extrude_profile(self, sketch, profile, workplane="XY"):
         taper = profile[0][1] if isinstance(profile[0], (list, tuple)) else 0
         p0 = profile[0][0] if isinstance(profile[0], (list, tuple)) else profile[0]
         r = cq.Workplane(workplane).placeSketch(sketch).extrude(p0, taper=taper)
-        return multi_extrude(r, profile[1:])
+        for level in profile[1:]:
+            if isinstance(level, (tuple, list)):
+                r = r.faces(">Z").wires().toPending().extrude(level[0], taper=level[1])
+            else:
+                r = r.faces(">Z").wires().toPending().extrude(level)
+        return r
 
     @classmethod
     def to_step_file(
diff --git a/tests/test_spacer.py b/tests/test_spacer.py
index c89e004..052bbd1 100644
--- a/tests/test_spacer.py
+++ b/tests/test_spacer.py
@@ -92,3 +92,14 @@ def test_spacer_render():
     assert s1.filename() == "gf_drawer_4x3_corner_spacer"
     if _export_files("spacer"):
         s1.save_step_file(path=EXPORT_STEP_FILE_PATH)
+
+
+# def test_spacer_render():
+#     s1 = GridfinityDrawerSpacer(tolerance=0.25)
+#     dx, dy = INCHES(22 + 7/8)-0.5, INCHES(16 + 3/16)-0.5
+#     s1.best_fit_to_dim(dx, dy, verbose=True)
+#     rh = s1.render_half_set()
+# #     assert _almost_same(size_3d(rh), (253.084, 177.0625, 5))
+#     # assert s1.filename() == "gf_drawer_4x3_half_set"
+#     # if _export_files("spacer"):
+#     s1.save_step_file(path=EXPORT_STEP_FILE_PATH)