This a short video on how to adjust the rangefinder on the Plaubel Makina 67. When I first bought my camera it came with the rangefinder out of alignment, it might have been bumped during shipment or the eBay seller was less than honest. The best way to test rangefinder alignment is to look at something on the horizon (something several miles away) like a tower, set focus at infinity, and look through the viewfinder to check if the rangefinder patch is a single image. If it is still slightly a double image, then you know you are out of alignment. Typically if it is aligned correctly at infinity it will be ok at other distances and visa-versa. As you can see in the video it is pretty easy to do, but if your negatives are still out of focus it could be something more serious like the focus mechanism itself, which requires a technician to delve deeper into the focus mechanism under the shutter release.