While the right main fuel tank was in place, I marked where the fuel lines would pass through the ribs and drilled out 5/8 inch holes for the grommets and the 90 deg bulkhead union. The outboard aux line conflicted with the vertical stiffener, and so I made another out of .032 instead of the stock .025 and reversed it with an additional rivet where the stiffener was notched for the fuel line. The aft inboard 90 deg bulkhead fitting conflicted with the vertical stiffener, so I was able to bend it down so that there was clearance. There were no issues with the front inboard hole.
Outboard aux fuel line hole with new reversed stiffener.
Inboard aft fuel line fitting with bent stiffener.
