0006 00  TM 10-1670-287-23&P  5.  With the toggles inserted in the finger-trapped loops, locate lines 1A and 8A.  6.  Grasp canopy fabric near line 1A attaching loop. Moving to center of canopy pull line 1A and the  control line on the right front riser and compare lengths to ensure control line is 15-inches (+ 1-inch)  longer than line 1A.  Pull both lines evenly before looking at the ruler to ensure an  accurate measurement can be obtained. NOTE Change 1  0006 00-17  Control Line  Reference Point  For Comparing  Lengths Line 1A  15+ 1-IN.  1D 2D 3D 4D 5D 6D 7D 8D 8C 7C 6C 5C 4C 3C 2C 1C 8B 7B 6B 5B 4B 3B 2B 1B 8A 7A 6A 5A 4A 3A 2A 1A TAIL NOSE