Just wanted to let others know who may be interested in ordering from Adorama for the first time, I had bought an 85L with squeaky focusing. After a week I decided to return it. I emailed Adorama about it Friday night and they sent me a reply with the documents I needed and the return UPS shipping label.
It took two days for the lens to get from Atlanta to their base, one day to process, and then they sent out a brand new lens without asking any inquiring any questions from me. The new lens arrived in 2 business days using UPS Ground (I guess Altanta is close?). I ended up paying for no shipping at all for this exchange return. The shipping was insured both ways. The new lens doesn't squeak and AF backfocus is gone!