EUREKA!
I heard back from Caroline via email (the Warranty Request still "Pending", but it's to answer the same questions):
The clicking/ticking is normal. So credit (sorry, I've forgotten who) to the OP who said it was "pulses" to the heater making that sound. Whether that's actually it, it's normal. Nothing was mentioned about it being "louder" or "softer" depending on the battery strength. I have not been able to confirm that for myself. It just clicks and ticks while heating, and it's normal.
The issue "Red Light Flash" upon tapping the upside-down unit gently on a [tabletop] to empty the chamber, however, was answered vaguely: "The red light is likely flickering because you are making the connection complete with the tapping".
To me this makes no sense even for one reason: That On-Off button feels quite sturdy and "heavy duty" when you click on and off. She's saying a gentle tap can made a connection inside the backend button circuitry. That would imply that a whole device (filled and ready to vape, or empty, but just assembled) can flicker when you simply drop the vape on a tabletop.
To which I dubiously state, NFW.
EDIT: I'd like to add that the last couple of pages of posts having to do with size of load, and cleaning of threads and contacts, has really improved how I "drive" the hopper.
After 11 days with it, I'm estimating that one battery will provide me with just about 2 medium-filled chambers with 3 nice cloudy deliveries per chamber using T4, and then maybe 1-1/2 more so-so lighter ones at the end of each load, at T4.5. It may be a conservative number: 6 quality clouds and 3 weaker ones on 1 battery.
Does that sound about "right"?