It's been years but back in 2004, I had a lot of problems getting a still from Revenoor. I don't know if he has his act together now, but after reviewing my emails from then, it was a definite hassle.
Since then, I've made 190 proof agave spirits using a Holstein still and a stills of my own design. The folks at Bavarian Holstein Partners are good folks and were helpful in discovering if Temequila® was a realizable fantasy. Their machines are beautiful, functional and expensive, but I guess that comes with the territory.
My stills aren't as pretty, but the resultant alcohol is identical in production time and liquor quality. Our current production stills are 300 and 600 gallon with refluxing columns. The stainless steel pots can do double-duty as fermentation vessels or storage. The column, condensers, coils and packing are all high-grade copper and brass welded by skilled craftsman (bazooka maker, but that's another story). They are powered by 500,000btu and 1,500,000btu propane burners in an outdoor enclosure to assure adequate ventilation and are Federally licensed (the license that really matters).
A danger of an improperly designed refluxing still is that in full-reflux, when most of the vapors are turned back into liquids at the top of the column, a liquid block develops and steam builds pressure. Things blow up when there's too much pressure.
Our modern/traditional condensers run off a water-hose with waste water run directly into the irrigation. Waste wash goes right from still to a large deep leach field. We've even considered doing an Agave Hot Tub as a spa treatment, but that too, is another story.
Also, you're collecting flammable liquid in a bucket next to a fire. Some people are better at this than others. It's the simple things that can ruin your day.
Good Luck. Have Fun.