when it takesdays to weeks to get a rresponse not dedicated nor care. 1 guy here took advise 3 different times and spent more than $1600. When all he needed to do was to take it to dealer to have codes reset internally with a MB code reader. Naw not dllusional. Fact. I will say this I did find cheap parts for my XF here. And some specs were helpfull. Sorry to bust your bubble. Sounds like you thought very highly of this group. Don't get so offended just gave some advice don't like it don't take it and move on.
God Bless you any ways.