@genio - well done for posting your equipment and its capability.
I have a few questions
1. what is the point you decide to cut to tails - is it output abv related or temperature or....?
2. I think i see the ABV output drop during run - is that what happens and why?
3. the Fores/Heads collection seems high ABV, i always thoughts the lower BP alcohols came over first but maybe i dont understand this point. My experience has been more collecting around 85%
4. the new cooling look impressive making cooling more efficient, no details on website yet.
5. Do you get same performance from the 500L?
Regards.