* Change 1 Part Red {44301 Hinge Plate 1 x 2 Locking with 1 Finger On End (Undetermined Type) to 44301a Hinge Plate 1 x 2 Locking with 1 Finger On End with Bottom Groove}
* Change 4 Part Light Bluish Gray {44567 Hinge Plate 1 x 2 Locking with 1 Finger on Side (Undetermined Type) to 44567a Hinge Plate 1 x 2 Locking with 1 Finger on Side with Bottom Groove}
* Change 6 Part Dark Bluish Gray {44302 Hinge Plate 1 x 2 Locking with 2 Fingers on End (Undetermined Type) to 44302a Hinge Plate 1 x 2 Locking with 2 Fingers on End and 9 Teeth with Bottom Groove}
Comments from Submitter:
The -b versions of these parts (without grooves) didn't exist at this point in time.