Drill out 3/16" holes and bolt HB-21A brackets (L&R) to both HF-97s using hand tight HH-19 (AN3-14A) bolts and locknots.
Drill out 1/4" holes at upper end of HF-96 (and HF-108 sleeves) (L&R) and bolt to HM-14 brackets hand tight with HH-11 (AN4-14A) bolts and locknuts.
Drill and deburr 3/16" holes in HG-13 gussets (4) and notch out firewall for inboard HG-13 mounting. Dri 3/16" holes in HF-9 for fitting HG-13 gussets.
Line up HF-97 to minus 4 degree and drill 3/16 bolt hoes. Then secure with AN3 bolts and locknuts. Tighten all nuts and bolts.
Revise upper firewall by adding sheet metal tabs from material notched out for HG-13 gussets. Rivet into pace with 1/8" rivets.
Spray prime replacement gusset HG-29 for outer left fuselage side girder.
