At the risk of being redundant... Don at DAG Camera Repair is the best.
He received my camera/lens yesterday. I'd mentioned to him that I was heading out to Joshua Tree for a photo shoot, and whatever he could do to get the camera back to me would be greatly appreciated.
That Cat sent me an email this afternoon to let me know that he'd completed the CLA on my M240, and corrected the back focus on my Zeiss lens.
In ONE day.
Carry on.