Leading and trailing edges of envelope when tightened to 1 1/4" beyond the root edge of of the fish. At this point the Wing Tensioning Nut WP-104 was tight. See Pic 2 in prior entry here.
Pic 3 shows the Wing Tensioning Nut WP-104 and nut AN360-416C as shown in figure on page 2-36. Tensioning Rib WI-025 is approximately 1/2" away from Root Compression Tube WI-003 as described on page 2-47 of Manua. l