The main spar had a center mark on it from the factory. I’d already found the center above that on the bulkhead for centering the spar, but I needed to transfer that mark down below the spar to make it useful for centering the gear leg.
The gear leg needs to be centered against the bulkhead before it gets locked into place.
Once everything is centered, it’s time to start work on the saddles which hold the gear legs in place. That process starts here.