I have been noticing a problem with the algorithm.  Here is central Florida we have a lot of afternoon thunderstorms.  During peak season the forecast for rain can be 100% but sometimes they miss us or we only get a little rain.  Sometimes we get hammered with inches.  We are starting that season now.  I have zoysia and run 2x a week.  Yesterday the system basically skipped (ran at 10%) due to forecast rain of .55".  The storms hammered me where I work, not too far away, but we got nothing at home.  Since rain is forecast later in the week, the system is again projecting a very short run.  My grass is drying out and starting to die.  I am running a manual cycle this morning, but that is not the point.  The system is tied to a personal weather station on the roof so it gets the real info on what actually happened.  What we need and I am suggesting is a check box for the system to be able "catch up" the next day if a forecast rain even does not provide the rain actually expected.