Updated with front stand offs.
Updated with correct parting line assembly instructions.
Updated Quad Valve Exhaust Valve Replacement section, diagrams and layout.
Changed step 8 in 1.1.3 Quad Valve Exhaust Valve Replacement to: Place whisker clamps around the grooves in each of the two whiskers. Before doing the final tightening of the whisker clamps, make sure that the parting line on the bottom of the wings is lined up with the parting line on the main body. For the SL 27 helmet ONLY, make sure that the parting line on the bottom of the whisker wings is 5/16” behind the parting line on the main body. Changed the caption in step 8 in 1.1.3 Quad Valve Exhaust Valve Replacement to: The port and starboard whiskers should align with the whisker covering the main body so that the parting lines are in alignment (except in the SL 27 helmet, where the parting lines on the bottom of the whiskers should be 5/16" behind the mold line on the main body). You can also make marks on the whiskers with a felt tip pen.
Updated the material of the 510-776 exhaust valve.
Updated the cross references to the torque specs due to the splitting of APNDX into three separate modules.
Updated layout.
