diff --git a/masque/builder/builder.py b/masque/builder/builder.py
index 1fbbe88..a401abc 100644
--- a/masque/builder/builder.py
+++ b/masque/builder/builder.py
@@ -4,7 +4,6 @@ Simplified Pattern assembly (`Builder`)
 from typing import Self, Sequence, Mapping
 import copy
 import logging
-from functools import wraps
 
 from numpy.typing import ArrayLike
 
@@ -189,26 +188,6 @@ class Builder(PortList):
         new = Builder(library=library, pattern=pat, name=name)
         return new
 
-    @wraps(Pattern.label)
-    def label(self, *args, **kwargs) -> Self:
-        self.pattern.label(*args, **kwargs)
-
-    @wraps(Pattern.ref)
-    def ref(self, *args, **kwargs) -> Self:
-        self.pattern.ref(*args, **kwargs)
-
-    @wraps(Pattern.polygon)
-    def polygon(self, *args, **kwargs) -> Self:
-        self.pattern.polygon(*args, **kwargs)
-
-    @wraps(Pattern.rect)
-    def rect(self, *args, **kwargs) -> Self:
-        self.pattern.rect(*args, **kwargs)
-
-    @wraps(Pattern.path)
-    def path(self, *args, **kwargs) -> Self:
-        self.pattern.path(*args, **kwargs)
-
     def plug(
             self,
             other: Abstract | str | Pattern | TreeView,
diff --git a/masque/shapes/arc.py b/masque/shapes/arc.py
index a2631c4..1841aed 100644
--- a/masque/shapes/arc.py
+++ b/masque/shapes/arc.py
@@ -235,16 +235,14 @@ class Arc(Shape):
             n_pts = numpy.ceil(2 * pi * max(self.radii) / max_arclen).astype(int)
             arc_lengths, thetas = get_arclens(n_pts, *a_ranges[0 if inner else 1])
 
-            keep = [0]
+            keep = []
             removable = (numpy.cumsum(arc_lengths) <= max_arclen)
-            start = 1
+            start = 0
             while start < arc_lengths.size:
                 next_to_keep = start + numpy.where(removable)[0][-1]    # TODO: any chance we haven't sampled finely enough?
                 keep.append(next_to_keep)
                 removable = (numpy.cumsum(arc_lengths[next_to_keep + 1:]) <= max_arclen)
                 start = next_to_keep + 1
-            if keep[-1] != thetas.size - 1:
-                keep.append(thetas.size -1)
             return thetas[keep]
 
         wh = self.width / 2.0