Yesterday Cuboid and Griffin came to post office, but after driver already left. Of course, I just had to have new gear in my hands and I picked the package personally.
As anticipated, Griffin's pin is just little longer than pin on Tron-S. I can't find my caliper to measure, but I think it's about 0.2 mm difference. I carefully screwed Griffin on my Evic mini and I could feel that the 510 pin is getting squashed while the tank was still wobbly. So, before first vape from new tank there was some work to be done.
I checked my wallet for some old plastic cards I will never again use. Drilled 5 mm hole, drew a circle around my Trons-S, cut with scissors and fine-tuned the edge with a pile. Now with plastic washer contact between Evic and Griffin is achieved just before the Griffin is tightly screwed on to the mod. Probably I already little squashed the pin on Evic while I was using Subtank mini. A friend gave it to me because it was leaking and he was screwing the tank on to the mod so hard that he clipped the insulation on atomizer and made a short. He didn't bother fixing it and bought a box of cigarettes. Well, I also made a mistake because the tank was leaking from the pin also and i installed a tiny washer under the pin in hope the leaking will stop. Well, leaking stopped but after some time I also got atomizer short warning. While fixing the damn thing, I dropped the tank on kitchen floor and all problems with the tank and atomizer short went away in an instance. It was a fake product with bad threads, so no big harm was done, but when replacement glass comes, I will try to fix it. Strangely, when not leaking I like the tank much more than Tron. Taste and airflow were much better. And probably leaking was a problem because of bad wicking. We will see.
Cuboid came with hardware V. 1.01 and firmware V. 3.00. I have 2 different batteries and I just checked the mod to check it is not DOA. I upgraded firmware to 5.14 and fired just couple of test vapes while plugged to USB. Seems everything is OK and combo looks great. But for now, I have to wait for new batteries and Cuboid went back in the box and on to the shelf. Aaaaa, China is too faaaaar.
Tomorrow I will buy a caliper so I can be 100% sure about this solution and I will try to find some sort of stainless steel I can use as a spacer. I know there should be some nice thin shining washers I can use instead of plastic but finding them will take some effort.
I must say Griffin is a beast. I had a spare twisted coil 0,34 ohm I just tried using it with CLR. I cleaned it and installed it to my new tank. Wicked, soaked the wick, filled the tank and made a giant cloud.

Shame I used juice I didn't like so much because after few vapes it tasted even worst. Quickly changed to my favorite juice and yeaaaah, cookies my mouth. And cookies in my bureau, on the hallway, in the saloon, kitchen... Everywhere.

Only problem is I will have to resupply the juice very quickly. Tank is just eating the liquid. Especially after level goes under the chimney. Nevertheless, it's so rewarding.
For now that's it.
Thanks for help and a warm welcome.