Started on right side lines. Did large fuel line first, then followed up with brake line. Mounted fuel valve onto fuel valve plate as specified after grinding off pointer on fuel valve handle. Had to redo center fuel line due to flat spot in tubing during final fit into fuel valve. Needed to cut apart isolation block to allow replacement of this line. Final attached brake lines on both sides where exit fuselage. Once fuel and brake lines were finalized in position, bolted both landing gear mounts into final position. Began work on forward cover plates to complete center cabin covers.