Turn in the mask
turn in the mask
Turn in the mask
fit the narrow rib into the groove where the lens and the mask are bonded
fit the narrow rib into the groove where the lens and the mask are bonded
readjust the mask
re-adjust the mask fit
readjust mask fit
re-adjust the mask fit
Re-adjust the mask.
Re-adjust the mask fit
Re adjust the mask fit
re adjust the mask