diff --git a/korman/exporter/animation.py b/korman/exporter/animation.py
index 385df77..b1e9dc1 100644
--- a/korman/exporter/animation.py
+++ b/korman/exporter/animation.py
@@ -319,10 +319,16 @@ class AnimationConverter:
             pos = kwargs.get(pos_path)
             scale = kwargs.get(scale_path)
 
+            # Since only some position curves may be supplied, construct dict with all positions
+            allpos = dict(enumerate(pos_default))
+            allscale = dict(enumerate(scale_default))
+            allpos.update(pos)
+            allscale.update(scale)
+
             matrix = hsMatrix44()
             # Note: scale and pos are dicts, so we can't unpack
-            matrix.setTranslate(hsVector3(pos[0], pos[1], pos[2]))
-            matrix.setScale(hsVector3(scale[0], scale[1], scale[2]))
+            matrix.setTranslate(hsVector3(allpos[0], allpos[1], allpos[2]))
+            matrix.setScale(hsVector3(allscale[0], allscale[1], allscale[2]))
             return matrix
 
         fcurves = [i for i in fcurves if i.data_path == pos_path or i.data_path == scale_path]
@@ -667,7 +673,10 @@ class AnimationConverter:
                         continue
                     for i in range(chan_values):
                         if i not in chan_keyframes.values:
-                            fcurve = grouped_fcurves[chan][i]
+                            if i in grouped_fcurves[chan]:
+                                fcurve = grouped_fcurves[chan][i]
+                            else:
+                                fcurve = defaults[chan][i]
                             if isinstance(fcurve, bpy.types.FCurve):
                                 chan_keyframes.values[i] = fcurve.evaluate(chan_keyframes.frame_num_blender)
                             else: