We have thought about the single cart loader, and have prototypes of it, just costs to much to produce. We are still working on this but is on the back burner for now.
In this I agree with OF. I started with a basic V2 and 2.4 before my Persei arrived and figured out the quirks of the oils, quantities, draw, etc on 2.4's before my 5's and 1.5's arrived. Since I have decided to run my V2 unmodified (no upgrade) because I have zero issues on partially filled 1.5's kicking out great vape on my V2. On my Persei I run it at 3.7 and feed it 2.4's, my 2.4's have had different kinds of concentrates including some black 'tar' oil that worked but did result in more issues. My BHO in the 2.4 I filled with 1 gram exactly. She hits well but I always have to do a little unclog clean at the bottom of the cart with a pin before I can prime and pull the block through. From that point she hits like a champ until I'm done. No leaking from the bottom, and I pull to cool but after 12 hours it's still plugged again. I suspect overfill as the problem.. Like I stated before my sweet spot seems to be just over the half gram mark with .2 being danger low. Of the 13 carts I have only 2 are in the discard pile. My first 5 ohm I burned out oxidising and a 2.4 that gave up on it's 2nd load of black tar.
I will admit I'm excited about the new Herc carts! I was really excited about a cart loader until I read that it's for doing 100 carts at a time (looks at his 11 carts) will there be a single cart version? I have a fantasy about a single cart loader.. Build a scale into it! Plug a funnel on a cart, screw cart into loader, turn on preheat and check the weight.. drop a glob of oil in and watch if melt down while keeping a eye on the weight.. then while you wait for the oil to melt down the stripper comes in.. (My kit will have to be the one with the stripper included - I'll pay for the extra shipping).
Right now I load fairly easy using a 'mounting block' I made years back for something else. The carts fit in though and it works. Here's a pic of the family, the V2 with it's 1.5, the Persei with the 2.4 and my version of the clear mouth piece and the mounting block (cart and funnel added for effect).
Cheers!
Indy.