When it takes 2 engineers and a nurse to try to fix something, and it doesn't work, that is why we invented recycling.
My right hand man in my office is an engineer. He has the greatest saying on his coffee cup, " I am an engineer. Let's just assume I am right".... You need one of those!
They often are. That said, I used to make my living, and a very good one, by being able to tell engineers when they were wrong.
So you were a consultant Edit to add Don't feel too bad. I've done a couple consulting side gigs in the past
Hey, don't trample on the nice Lady Coin Collector's posts and get her angry!! I'd just follow her around ( politely) listening to her and the sellers ( and offer half of what she did ) . I am just a nice person Jim