Worked on the right upper forward longeron to updrill holes, countersink for rivets where necessary, and drill/tap holes to secure the glare shield.
Decided to use the specified AN6 bolts for the lower seatbelt hardware. I made a 1" hole in the sideskin and covered it with 35 cent plastic hole plug. This results in a low profile solution to the protruding bolt head and is also large enough in diameter to use a 9/16" socket when belt replacement is needed.
