I made the decision to keep my project moving forward by purchasing my fuel tanks from Zenith. They arrived today and are quite well made. Since these were made in September, I believe they incorporate all of the changes necessary to avoid the "foul fitting fuel filler" problem that was much talked about on the Zenith list for months...maybe even years. I have a good home for one of these tanks already. I hope to complete the "nest" for tank #2 this weekend.
Right wing fuel tank
The low end of the tank with fuel outlet (and drain below)