More test results but no picture.
I put .050 gram herb into the MVT using standard stem 2 screen method. By now I had put 7-8 loads through the MVT and felt confident using it. I had 4 draws on it turning after each draw.
suggestion for
@mistvaporizer
I think it would be great if the standard stems had little notches at 90 degree angles around the top circle of the 14/20 joint. Easier to track stem turning.
Anyway I dumped the ABV out and saw it was still pretty green. Extraction maybe 40-50% without stirring. I put the light ABV into a Crafty and 3-4 draws later had a solid dark brown extraction 90%+.
I like the MVT a lot. It is beautiful, hits hard and tastes great. You can relax and draw at any pace, and I am not going to be concerned with stirring or vaporizer efficiency. I will just vape the ABV from the MVT (without stirring) in the Crafty or maybe learn other uses.