diff --git a/masque/builder/pather.py b/masque/builder/pather.py
index 9af473d..3a0dee4 100644
--- a/masque/builder/pather.py
+++ b/masque/builder/pather.py
@@ -352,17 +352,16 @@ class Pather(Builder, PatherMixin):
         except NotImplementedError:
             # Fall back to drawing two L-bends
             ccw0 = jog > 0
-            kwargs_no_out = kwargs | {'out_ptype': None}
+            kwargs_no_out = (kwargs | {'out_ptype': None})
             t_tree0 = tool.path(    ccw0, length / 2, port_names=tool_port_names, in_ptype=in_ptype, **kwargs_no_out)
             t_pat0 = t_tree0.top_pattern()
             (_, jog0), _ = t_pat0[tool_port_names[0]].measure_travel(t_pat0[tool_port_names[1]])
-            t_tree1 = tool.path(not ccw0, abs(jog - jog0), port_names=tool_port_names, in_ptype=t_pat0[tool_port_names[1]].ptype, **kwargs)
+            t_tree1 = tool.path(not ccw0, jog - jog0, port_names=tool_port_names, in_ptype=t_pat0[tool_port_names[1]].ptype, **kwargs)
             t_pat1 = t_tree1.top_pattern()
             (_, jog1), _ = t_pat1[tool_port_names[0]].measure_travel(t_pat1[tool_port_names[1]])
 
-            kwargs_plug = kwargs | {'plug_into': plug_into}
-            self.path(portspec,     ccw0, length - abs(jog1), **kwargs_no_out)
-            self.path(portspec, not ccw0,    abs(jog - jog0), **kwargs_plug)
+            self.path(portspec,     ccw0, length - jog1, **kwargs_no_out)
+            self.path(portspec, not ccw0, jog    - jog0, **kwargs)
             return self
 
         tname = self.library << tree
diff --git a/masque/builder/pather_mixin.py b/masque/builder/pather_mixin.py
index 6acd7c6..bcf9d5e 100644
--- a/masque/builder/pather_mixin.py
+++ b/masque/builder/pather_mixin.py
@@ -321,7 +321,7 @@ class PatherMixin(PortList, metaclass=ABCMeta):
             else:
                 # S-bend, delegate to implementations
                 (travel, jog), _ = port_src.measure_travel(port_dst)
-                self.pathS(portspec_src, -travel, -jog, **dst_args)
+                self.pathS(portspec_src, -travel, jog, **dst_args)
         elif numpy.isclose(angle, 0):
             raise BuildError('Don\'t know how to route a U-bend yet (TODO)!')
         else:
diff --git a/masque/builder/renderpather.py b/masque/builder/renderpather.py
index 303a59d..747a098 100644
--- a/masque/builder/renderpather.py
+++ b/masque/builder/renderpather.py
@@ -488,13 +488,12 @@ class RenderPather(PatherMixin):
             ccw0 = jog > 0
             kwargs_no_out = (kwargs | {'out_ptype': None})
             t_port0, _ = tool.planL(    ccw0, length / 2, in_ptype=in_ptype, **kwargs_no_out)
-            jog0 = Port((0, 0), 0).measure_travel(t_port0)[0][1]
-            t_port1, _ = tool.planL(not ccw0, abs(jog - jog0), in_ptype=t_port0.ptype, **kwargs)
-            jog1 = Port((0, 0), 0).measure_travel(t_port1)[0][1]
+            (_, jog0), _ = Port((0, 0), 0).measure_travel(t_port0)
+            t_port1, _ = tool.planL(not ccw0, jog - jog0, in_ptype=t_port0.ptype, **kwargs)
+            (_, jog1), _ =  Port((0, 0), 0).measure_travel(t_port1)
 
-            kwargs_plug = kwargs | {'plug_into': plug_into}
-            self.path(portspec,     ccw0, length - abs(jog1), **kwargs_no_out)
-            self.path(portspec, not ccw0,    abs(jog - jog0), **kwargs_plug)
+            self.path(portspec,     ccw0, length - jog1, **kwargs_no_out)
+            self.path(portspec, not ccw0, jog    - jog0, **kwargs)
             return self
 
         out_port.rotate_around((0, 0), pi + port_rot)
diff --git a/masque/builder/tools.py b/masque/builder/tools.py
index 6bd7547..9c27a41 100644
--- a/masque/builder/tools.py
+++ b/masque/builder/tools.py
@@ -768,7 +768,6 @@ class AutoTool(Tool, metaclass=ABCMeta):
                 l2_err: BuildError | None = err
             else:
                 l2_err = None
-            raise NotImplementedError('TODO need to handle ldata below')
 
         if not success:
             # Failed to break
diff --git a/masque/pattern.py b/masque/pattern.py
index d870a43..4a401b6 100644
--- a/masque/pattern.py
+++ b/masque/pattern.py
@@ -1169,13 +1169,12 @@ class Pattern(PortList, AnnotatableImpl, Mirrorable):
             ports[new_name] = port
 
         for name, port in ports.items():
-            pp = port.deepcopy()
+            p = port.deepcopy()
             if mirrored:
-                pp.mirror()
-                pp.offset[1] *= -1
-            pp.rotate_around(pivot, rotation)
-            pp.translate(offset)
-            self.ports[name] = pp
+                p.mirror()
+            p.rotate_around(pivot, rotation)
+            p.translate(offset)
+            self.ports[name] = p
 
         if append:
             if isinstance(other, Abstract):
diff --git a/masque/ports.py b/masque/ports.py
index 0211723..b8137c0 100644
--- a/masque/ports.py
+++ b/masque/ports.py
@@ -100,6 +100,7 @@ class Port(PositionableImpl, Rotatable, PivotableImpl, Copyable, Mirrorable):
         return self
 
     def mirror(self, axis: int = 0) -> Self:
+        self.offset[1 - axis] *= -1
         if self.rotation is not None:
             self.rotation *= -1
             self.rotation += axis * pi