Thanks for your response. Your great customer service makes me want to buy more of your products.
I took your advice on the chamber cap and it worked exactly as you described. It now fits perfectly and stays in place when I remove the tank.
An unfortunate effect in troubleshooting is that you often create new problems in trying to solve the one you have. I tried the vertical build (used Kanthal since I don't have any nichrome) and things were going well. But somehow in the wicking process, my resistance went from 1.0 to .2 ohms. I now find that ANY build shows barely measurable resistance. Obviously I have a problem elsewhere and once again have completely dissembled the tank to find it.
A schematic of the parts and their assembly would help a lot, but I have not been able to find one. I'm using brief glimpses from Qorax's videos to make sure I don't have something assembled incorrectly.
So, for the time being, I will be working on that resistance problem. Thanks to everyone who offered help!
Check your posts for trapped snippets, shreds, bits of wire, (ok not nicks ) from your coils. GP Heron is a bigger GP Spheroid and both have the same positive posts and similar decks, so you may use the following video guide references for the correct assembling: