-MARKED VERTICAL CENTRELINE ON T-712 TANK ATTACH ANGLES -MARKED LENGTHWAYS CENTRE -DRILLED 6x 712 CENTRE FLANGES TO #12 -CLECOED ANGLES TO REAR OF SPAR -MATCH DRILLED REMAINING TANK ATTACH HOLES TO ANGLE -FABRICATED NUTPLATE JIG -DRILLED NUTPLATE HOLES TO 712…