First post and you are trashing a well respected BMW repair shop? Dave can be tough to deal with sometimes (if he isn't German, he should be) but I have always found him to be honest and he looks after his clients. His mechanics are competent (unusual in this day and age) and thorough. Did you give him a chance to make it right?
He has also saved a lot of travelers during their trips when they have limped into town and I recommend his shop all the time to people in trouble and always get good feedback.
This is your first post here, so you had better provide more info. Like, who found the FD to be improperly set up? AFAIK, there is nobody else in town who can set up an airhead FD. Unless you sent it to Anton or one of the other US based experts, I can't see who could have rendered that opinion.
2005 GS1150 Adventure - Range Rover, 2002 DR650 SE - Land Rover
"Not all who wander are lost" - JRR Tolkien