In your initial string of posts your basically said ASS incorrectly repaired your vehicle causing you to have this problem. From the info and pictures you have posted that is very clearly not the case IMO. (I’m an ASE master certified tech) So I fail to see where any of his conduct or the matter in which he handled this was inappropriate. Sounds like you had some shitty luck with your car, but since you supplied the parts it’s really not ASS’s fault. Even if that bolt hypathetically did get dropped in there at ASS which is very unlikely there is no impact damage on it and it doesn’t hold a timing component to the block. Guess the moral of the story would be don’t supply your own parts.