Getting some glare on the Zumo, are there any sun shades/peaks that can be positioned at the top of the zumo so I can see the map when the sun is shining?
Depends where you have it fitted but I fitted a dark Nippy windscreen to "shade" my Garmin with reasonable effect. It's an improvement but it does sweet FA with the sun just over ones shoulder though....
Just checking that the backlight is up to 100% by pressing and holding the page (square) button and you will get a large lightbulb and then press the + to increase.
Where have you got it mounted?
If it's low and angled upwards towards the sky you'll get a lot of glare.. Move it higher and more horizontal should solve the problem.