6. Install the inner support angles (P3501, P3502 right P3503, P3504 left) on the wing spars as shown in photos. On left wing radius the brackets to fit into spar cap as needed. Also you may need to radius a washer and use under the head of the bolts to fit spar cap.
Note: these may have been installed during spar construction
7. Test fit tank and verify position fit etc. per above steps. The P3501-P3504 angles will need to be trimmed so the tank can sit in the proper location. Trim only enough so they tanks fit properly.
8. When satisfied with tank position fit drill the FT attach angles to #30 at inboard end and cleco in place.
9. Remove tank and reinstall with the aft FT skin “tucked” under inboard aft wing skins.