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.
Switched the 510-796 exhaust valve back to the 510-776.
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 description on the 550-574 from, "spacer" to "sleeve" and updated the appearance of some components.
Added in the P/N 550-577 Nose Block Guide and removed the 540-563 Port Retainer.
Updated layout.
Added P/N 540-563 Port Retainer.
Added critical components P/N 560-517 Helmet Shell, Stainless Steel and P/N 520-004 Face Port.
Added new handle grip.
Changed the material for the P/N 550-081 from stainless steel to bronze.
Updated the port retainer.
Updated the description for location #51 P/N 560-556 to Regulator Mount Pod, 350/455.
