After practicing tubing fabrication skills on sacrificial 3/8" copper tubing from Home Depot, decided to do it for real. Tubes turned out quite well if I have to say so myself :).
Fabricated F-1259F tank-to-pump fuel line (page 28-03, steps 1 through 3). Upper tube in 1st photo.
Fabricated F-1259C fuel flow meter-to-gascolator fuel line and did a trial fit (page 23-05, step 4). Middle tube in 1st photo and trial fit in 2nd photo.
Fabricated F-1259D fuel valve-to-flow meter fuel line and did a trial fit (page 23-05, step 5). Lower tube in 1st photo and trial fit in 3rd photo.
Still need to fabricate F-1259E pump-to-valve fuel line but waiting on new parts for fuel valve assembly to make sure everything fits correctly.