diff --git a/masque/builder/pather_mixin.py b/masque/builder/pather_mixin.py
index b0ccf61..f2b8229 100644
--- a/masque/builder/pather_mixin.py
+++ b/masque/builder/pather_mixin.py
@@ -506,7 +506,10 @@ class PortPather:
         return self
 
     def path_from(self, *args, **kwargs) -> Self:
+        thru = kwargs.pop('thru', None)
         self.pather.path_into(args[0], self.port, *args[1:], **kwargs)
+        if thru is not None:
+            self.rename_from(thru)
         return self
 
     def mpath(self, *args, **kwargs) -> Self:
diff --git a/masque/builder/tools.py b/masque/builder/tools.py
index b80c1f8..1db156b 100644
--- a/masque/builder/tools.py
+++ b/masque/builder/tools.py
@@ -623,6 +623,8 @@ class AutoTool(Tool, metaclass=ABCMeta):
             out_ptype_actual = out_transition.their_port.ptype
         elif ccw is not None:
             out_ptype_actual = bend.out_port.ptype
+        elif not numpy.isclose(straight_length, 0):
+            out_ptype_actual = straight.ptype
         else:
             out_ptype_actual = self.default_out_ptype
 
@@ -768,6 +770,8 @@ class AutoTool(Tool, metaclass=ABCMeta):
             out_ptype_actual = out_transition.their_port.ptype
         elif not numpy.isclose(jog_remaining, 0):
             out_ptype_actual = sbend.ptype
+        elif not numpy.isclose(straight_length, 0):
+            out_ptype_actual = straight.ptype
         else:
             out_ptype_actual = self.default_out_ptype