Hello, you helpful lot. I hope. Found that I had a big bit of gunk on the sensor of my 8 year old M262 - it showed up on the photos. So I've taken my trusty blower brush to the sensor. There are still a few spots (see image) that I can't budge. They don't seem to show up. Is this a clean enough sensor in your experiences ? Is your sensor showing dust like this or is it pristine ? If you think I should get rid of the dust showing - how would I do that beyond the blower brush ? Thank you as ever for your collective help. In the past Leica colleagues have been magnificent in their help. Best Regard to all 262ers and all others of course.