My new model 3 (48xxx, June built) is at the service center. Seems that in the rush to meet the 5,000 goal build quality took a hit. Had three issues that the SC said would be resolved via future software updates (Brake light warning, low washer fluid, & car forgets that mirrors folded...all posted by others at TMC). Alas, my car will spend next 1-3 days while the service center fixes rattle...sounded like coming from back but we by sitting in different seats, with backseats folded down and back up, isolated as coming from front passenger side dash area. SC guy was wonderful and said it is clearly abnormal and needs to be fixed. Good news -- SF service center experience today was A+ and as good as any service encounter (Porsche, Benz, etc.). After the disaster that the delivery logistics / payment / delivery date experience, all dealing with the blackhole called Tesla ISA, the service center restored a little faith in Tesla. Bad news -- June build quality sucks. So my advice is when in doubt schedule and appointment using your My Tesla page. You paid $50K+ and let them fix it while you drive a loaner. Don't call and ask their advice -- just take it in. My fear is as delivery rate ramps the service centers will get backed up and wait will get longer....and we know how well Tesla has handled high volume of deliveries -- what makes you think that they have anticipated the increase in service request as volume grows.