Tonight I worked on cutting and flaring the soft aluminum tubing that would be used for the vent lines in both of the fuel tanks. After flaring, I set aside the tubing that would be used for the right tank for later.
For the left tank, I installed the snap bushings that protect the vent line from contacting the ribs, and then slid the tubing through them. I had to slightly enlarge the mounting clip's hole to allow the snap bushing to fit. A couple of gentle bends were needed on both ends for the vent line to go where it needed to, as described in the instructions. I temporarily installed the bulkhead fitting to check the alignment of the flared nut fitting. This required scraping a little bit of the dried tank sealant that had oozed under the retaining plate and prevented the bulkhead fitting from completely sitting flush. I also scraped a little tank sealant that had gotten into some of the threaded fittings.
Since I was avoiding mixing up tank sealant tonight, I started riveting on some of the nutplates that went along the nose section of the inboard edge of the tank skin. This required me to dimple the nutplate holes along the edge of the tank skin that I had previously deferred (I dimpled the right tank skin too, while I was at it).
What's next? Time to install the last half of the inboard rib, and then probably switch to working on the right fuel tank.