Converting to LM/VM combo. Build log / Design questions

[duman]

Hello everyone. About three years ago I built my first still with the help of all the amazing content in this forum. Basically educated myself from the ground up. I think it is amazing and I thank all that have contributed. Thanks to this forum, I was able to build a nice still and it allowed me to drink quality drink, whenever I wanted. I have always distilled Birdwatchers. I made vodka, raki and many kinds of liqueurs. All my friends love to drink whatever I make.

When I built it, it was gas-powered and had a DIY LM valve that I had made. Recently I converted it to electric and switched to a 1/4 ball valve for LM take-off. I also added insulation to the column. It has always worked well but the ball valve and electricity just made the operation a lot easier. If I could go back to when I first build it, I would have done many things differently though. Mainly, the slanted head. It just wasn't necessary and made the build more complex.
NOT: AŞAĞIDAKİ SPECLERDEN RESİM ÜZERİNDE GÖSTERİLEBİLECEKLERİ RESİM ÜZERİNDE GÖSTERİP LİSTEDEN SİL
Here are the specs:
- 22 L, 304 ss boiler
- 2.5 kW ss heating element (not ULWD, just a regular cheap one)
- 2" 304 ss Column, thin walled (BUT euro standard, meaning 60.3 OD and 57.9 ID)
- 1500 mm Packed height
- Lava Rock packing. (Works amazing. Loading and unloading for strip/reflux run is a bit of pain though)
- xxx Total height
- 10 degrees Condenser column slant angle
- Copper Dam for centering the reflux return and pooling for LM take off (this was hard to make.)
- xxx long condenser column
- 1/2", xxx long CSST spiral Condenser (Works amazing. Only the first quarter of the slanted column gets hot during operation)
- Stainless flanges at the packed height, as I had no money for ferrule set(s). The bottom of the column is directly brazed to the boiler lid.
- A local craftsman brazed the joints. I had to make a second pass with lead-free solder at some joints, as there were leakages.
- %95 abv take off directly from ferment to reflux. I only recently started doing strip runs and the low wines are waiting for distilling. I am really excited to see the results of distilling this way.
- Thin CSST LM take-off
- Duration of total reflux operation(from 20 L %10 abv wash) is about 4 hours.
- Duration of strip run (18L %10 abv wash) is 1 hour 45 minutes.
- Unfortunately never measured the take-off rate.

The images from the design:
Various photos:
My very first strip run:
First low wine:

ADDING THE VM FEATURE
I have bought the valve and other materials. They can be seen from the images.
Here are the specs:
- 3/4 304 SS Ball valve (I am unsure about the size. I hope this was a right choice?)
- 1000 mm 304 SS Tube in tube condenser--> Inner tube: 22 mm OD, 20 mm ID, Outer Tube: 30 mm OD, 28 mm ID. (The clearance is a question, can be too restricting for water flow. But bigger tubes didn't have thin-walled options and they were triple the price. I hope this works).

I need advice about a couple of things. I would really appreciate any input.
- The biggest question I have is this: Where exactly should I position the VM take-off port? I am guessing there should be some clearance between the VM port and the packing. But too high would also be bad (I guess?) What should the be "B" dimension?- Should I change the position of the thermometer?