Rob. Let me see if I can answer your questions.
First off, I’d agree with you that decarbing in the carrier oil is the optimal way to get an oil you can easily dose with control. You’ll also trap more terpenes decarbing while infusing.
I don’t worry much about complete decarb, understanding the value of a diverse cannabinoid and terpene profile. We really know so little.
The best decarb I get - checking with a hot oil bath for decarb efficiency - is in the pressure cooker (I have an Instant Pot) on high pressure for 1 hour and 50 minutes. It comes out almost completely decarbed.
The infusion rate is an industry standard, and only meant to be a best guess. With an infused oil you’ll never get 100% extraction. Some of the oil will remain in the plant material regardless of your work to release it. So 85% gives us lots of wiggle room.
Testing is the only way to be certain of the components found in your oils. Someday that service’ll be widely available at a reasonable cost. Right now....not so much.
Lastly, dry lecithin has phospholipids, which are an abundant part of every living cell. Liquid sunflower lecithin has additional glycophospholipids. The significance is that glychophospholipids contain both the phosphate found in phospholipids as well as carbohydrate as integral structural components. In simple terms, they build stronger cells.
