I finally made up my fuel line covers using material from a scrap fuel tank cover which was too far gone to save. It can live on in various other forms of half-track parts! I made a paperboard template, cut & finished and laid out the metal and then had a local fabrication shop bend them up on their press brake.
I’d like to offer this tip to anyone else who may need to scratch-build something similar:
Make your template out of something which if you screw it up, it can actually be a positive thing, necessitating getting more of the same “template material”.
You’re welcome.
Jon