sand extra bondo off wing brace surface lift main gear into position (requires rotation, moving ears forward as they enter wing cavity). insert pin to hold position. use second pin to align. insert bot into hole, tighten nut to pull gear snug to wing brace. tighten four bolts to hold position for alignment.
install down lock arm - four bolts. tighten to snug - remove arm at pivot bolt to tighten fourth bolt.
do same on other side. no further work today - need for wing sealant to harden.