18. Grasp canopy fabric near line 1D attaching loop. Moving to center line of canopy, pull line 1D and the
control line on the right riser and compare lengths to ensure control line is 15-inches (+ 1-inch) longer
than line 1D.
Pull both lines evenly before looking at ruler to ensure an accurate
measurement can be obtained. Adjust knot at the toggle to obtain
15 } 1-IN.