As mentioned in my post, no one else would touch it, I have a 2,000 sq ft. shop, that is where it would go.
When I was still young and pretty, working for Mercedes, on a local content development program, I was swamped. I accidentally installed an exhaust manifold gasket the wrong way around, restricting the ports. There was just too much going on. When they put it on the Dyno, it lost around 40 hp. As I had a whole bunch of other stuff going on, they got a tech to pull the manifold and he did exactly to me what happened to Frank here. Thirty years later, I have still not forgotten it and at that time I just walked away from the issue, So I know what it feels like.
I don’t judge folks, just avoid those who have values which makes me uncomfortable.
If you have concrete factual data from both the customer, Frank and BCP, and analysed all of that accurately, you are entitled to your opinion.
In my view that amount of detail is not really my business, just sad we lost someone who gave good input here.