This is one of the reasons we are moving to simpler water as needed schedules in our 2.5 release coming soon. These new schedules will have the power of flex but much simpler to configure and comprehend. Flex schedules typically work great if the settings align with your yard but get difficult to adjust if not. If you don’t want to start tweaking the flex schedule, I would wait until these come out which will be in mid April.
If the water drop adjustments didn’t get you where you want for flex scheduling this article explains the concepts behind flex. If you don’t want to adjust watering frequency, the easiest way is to create a custom nozzle (http://support.rachio.com/article/271-creating-a-custom-nozzle) for the zone and slight modify your current in./hr rate and assign it to your zone(s).
http://support.rachio.com/article/385-flex-schedule-tips
Hope this helps.
