Added the additional port on the stainless steel side block.
Added the front stand off, associated screw part number and the complete kit part numbers.
Created modular BlowAparts.
Added the note (order P/N 525-745) to the 510-837 head cushion foam spacer assembly and added note that the nose block device includes the nose block pad.
Updated the appearance of components to maintained consistency with the other stainless steel helmets.
Added in the P/N 550-577 Nose Block Guide and removed the 540-563 Port Retainer.
Updated layout.
Changed the 555-172 KM 77 Bent Tube to 555-167 47/77 Bent Tube and changed the 555-173 KM 77 Bent Tube w/ O-rings to 555-168 Bent Tube Assembly w/O-rings.
Added P/N 540-563 Port Retainer.
Added new handle grip.
Switched the washers in locations 72 and 73 (P/Ns 530-545 and 520-165) and updated the material on the P/N 550-372 Regulator Mount Nut.
Added "Order P/N 555-168" to location #91 47/77 Bent Tube.
Updated the port retainer.
