I was finally able to pick up the airhead I bought. The front brake is dead so there was a lot of butt-clenching during the 70km ride home. It's in unmolested condition, only the tank was rusted so it was swapped from another airhead. The patina and a bit of rust add to the charisma of the bike. I'm going to repair the brake, change all filters and fluids, check the sealing rings, etc to prep it for the summer trips. I Will post the process here in hope of getting guidance from local experts, most of my wrenching experience comes from riding a $100 bike in Laos and Vietnam for a few months and this will be a much more serious project.