Head Cushion, Head Cushion Foam Spacer (HCFS) and Chin Cushion

Updated with auxiliary port and front stand offs.

Updated entire module throughout, including new procedures for head cushion stuffing along with new images to accompany.

Updated layout.

See HDCSH-1 (bottom right paragraph) states “Chin Cushion P/N 510-667”. It should be P/N 510-683 for the Chin Cushion Assembly. Also updated the note and tip icons.

Updated layout.