No need to hide, just get a bit more educated... Leica M glass is optimized to be its sharpest at relatively close reportage shooting distances, like 1.5 meters for the 35's. Also, they are optimized to be sharpest wide open and tend to have their best operating aperture 2 stops down from wide open. By f8, ALL M lenses are suffering from VISIBLE diffraction. THe last factor is the lens and body being in synch --- IOW making sure what you thought you focused on was what you actually focused on.
So, assuming the mechanical focus connection is proper, try a repeat of your test, using the systems at 1.5 meters and f4. then get back to us with those results
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