Pretty sure, at this point in the project, I won't be able to contribute. Out of my league now.
The last snippet I have from BITD, from a very very reputable builder in the midlands, with early certification, but still did 753 chroming, and supplying to pro teams is:
"It's a bitch. It can't be cold set. No room for error. It's got to be right in the jig and out of the jig."
Can't and will not mention names.