Here are my initial thoughts:
I'm loving the NonG stem and the stainless steel stem, lite. They are great for microdosing which is the reason I bought the UD. I only put in enough to cover the screen and it extracts everything in one hit. The hits with the NonG are very smooth through water. That's why sometimes I use the stainless steel stem just so that I can feel the vapor a bit more. So I'm alternating between those two so far.
Before this, I was using a VapCap M and OG as my daily drivers. I would typically fill the M about half way or less. I would only fill the M up the whole way if I wanted to get pretty baked. I moved the screen on my OG so that the bowl was really small. With the UD, I'm able to use even smaller amounts than with my VapCap OG which is what I was going for.
The first bowl I packed using the short GonG I combusted. But I turned the temp down with the VVPS and added the extension cord and haven't combusted since. I'm back to using it at 12.0 again on the VVPS without any combustion, so I think using the extension cord cooled it off enough by itself.
I guess the only issues I'm really having with it is that I'm finding it hard to really milk my bong up really white and I'm finding that it doesn't burn evenly using larger amounts. I think my issue with trying to milk the bong with my short GonG is that there's too much air getting through. So I'm thinking if I add an O-ring, it will restrict the airflow and give me denser vapor. Any O-ring advice? It still worked well and gave me a big hit, don't get me wrong... but I think there's just a bit too much air getting through for my tastes when I'm looking to take a fat rip.
My other issue is that if I pack a little more into the bowl of a stainless steel tip, the top part gets charred pretty black, but there's still some light green and light brown stuff near the bottom. With my VapCap, everything got roasted pretty evenly. So with a bigger bowl, I stir it after taking a big hit... and it looks like there's still some material in there that isn't 100% used up... but when I vape more hits, I don't really get much. So when using a stainless steel tip, I'm finding it's not even really worth it to stir it and take a second hit if I feel there's some left over.
When I used the GonG with a descent amount in the bowl, I got 2 pretty big hits... the top would be pretty dark, but the stuff in the middle and the bottom would be still be a bit green. I stir it up, and I get a little more vapor, but not a whole lot.
So I guess I'm looking for any tips on how to improve the extraction. Should I lower the temperature a bit for bigger bowls and try to stretch out my session a bit? Or is the best thing just to pack thin layers and reload once or twice instead of packing a bigger bowl?