You could very well could be right....maybe it doesn't, but like I said to the OP in a PM earlier this week, if it were "me", I would tear it down and start over.
I say that with some experience because I went through.....well, let's say sorta kinda the same situation with that rat-bastard.....ball bag Nick Micale. Though, fortunately for me, I never ran my motor. But for the kinda money (and damage to a $3000 crank and a torched turbo) the OP already has into this abortion (and that's putting it mildly because it's a total pooch screw) of a motor, I wouldn't risk throwing more time and money at it with the same cast of characters trying to "diagnose" it.
I think the video tells you everything you need to know! Something aint right.....
Nothing against Steve V, I'm sure he's a good dude, clearly, because he's making an effort to make it right and that's a stand-up guy in my book.
My suggestion to the OP is/was to send it to Chris Hogeland. He is a master with the "stage", TA, 109.....and you're not gonna find anyone better.