Hi forumers,As some of you might have read my other posts with regards to the loud whirring sound that I am hearing in my E39, I was thinking of getting it diagnosed at Autobavaria. I have been to 4 mechanics now - WP Auto, Optimum, MSpeed as well as BMWorks and none have been to really pin point the issue.Do you think I can get it diagnosed at AB and then send it to my mechanic to have it repaired? Would AB have a higher chance of diagnosing? Or are there any recommendations? How much does AB charges for diagnosis?Thanks for your help!