Attach left wing frame to mounting brackets on either end of HF-25TP upper fuselage tube and bolt into place hand tight. Attach forward strut to lower fuselage and upper strut fitting between HB-2A on leading edge of wing. Dihedral is set to 3-4 degrees.
Test fit rear strut to trailing edge of wing at brackets HB-2 and align at bottom to preserve washout of 4 deg. at fourth outboard wing compression rib. Bolt HS-20 into place with AN3-15A bolts, washers and locknuts (3 of each).. Trim about 3/8" from leading edge of bottom of rear strut and when aligned bolt into place with AN3-17A bolts, steel washers and locknuts.