The tank itself is deformed, in whatever processes deformed the tank appears to have sheared the vent. Imagine it was during install or prior to instal. Do you guys know if these are repairable?
I understand these tanks are no longer available. I imagine there’s a reason for that. Do I find a used tank or pull both and install bladders?
I was a little surprised that I wasn't more rattled about it, but I saw a field withing gliding distance, figured it was "survivable", then relaxed and went through the options. Having the engine re-start several times was all a bonus.
Upon closer inspection, the right tank is sagging too, just not quite as much. But enough to cause a belly in the vent tube, which may be a bigger problem.
I’ve started a new thread in the Maintenance Bay asking specifics about the situation.