When I bought a used M8, I had the good fortune that the rangefinder was bang-on perfect with both of my lenses, a Zeiss 35/2.0 and a Voigtlander 28/2.0 Ultron. Absolutely spot on for focus as well as vertical alignment. Couldn't say the same for my M9. Vertical alignment was slightly off. Luckily, Youxin Ye lives 20 min away from me, and after spending a very pleasant hour at his place, I left with that issue sorted. Unfortunately, focus wasn't quite perfect with two of my lenses (ZM 35/2.0 and CV 35/1.2) and was pretty significantly off with the third (Canon 50/1.4 LTM). I could work around these issues, but I decided to just bite the bullet and send the whole kit off to DAG for focus calibration. I know DAG can take a long time (months) for some work, but he reassured me that for this focus calibration I'm looking at a quick turnaround. So... my M9 and 3 lenses are en route to Wisconsin, and I am temporarily Leica-less. Will have to live vicariously through the rest of you here. At least my other cameras will get some love in the meanwhile .