Got the remaining batch of tubes today, and verified filament characteristics and tube functionality. In case you are wondering, the answer is NO. I have not yet fired-up all 6 tubes at the same time to show it working as a 6-tube clock. That is scheduled for later this week and a video will be made, assuming the launch succeeds. For now, it's all systems go and the countdown is on it's final 40-hour hold while I review the data one last time and make the final go/no-go decision.
You might notice one of the tubes is dimmer than the others, and it also draws less current. This one appears to be the runt of the litter. But not all is lost.
As Yoda said..."No, there is another".
Google wont let me post all photos due to the size, but you get the idea