You are being too modest Michael
The experience and gathered set of data can't be denied.
As you know, lot of this heat flux and flow, etc are being calculated based on experimental data (unfortunately, most of equations available are close but no cigar as complexity of behavior under gradient temperature, heat flux, and surface tensions are not something that has been fully analyzed yet).
This comes as even more of complication I bet when it comes to auto-cascade. There might be equations that people use that are pretty close but I bet last 20% of it comes from years of experience. (in fact, neural network AI is quite often used in industry it seems in field of cryogenic... which is nothing more than emulating what human mind is capable of).
When such new variables comes in as different gases, etc... of course, it might be some larger amount of change until you get it under control in your mind :P
We really do appreciate your contribution even if there are some things overlooked as it is still TONS better than what is available to use easily (nope... after reading 5th cryogenic book... lol... you still have a lot of imperical data that is useful to us than these books do... haha)
Many thanks to people like you and Detroit AC who are in field and spend your valuable time to enrich the community again.