I turn it on 5 seconds before the 20 second mark of the minute it's supposed to feed. So if it was main pending rf@ 12:04 I'd click "Start feeding" at 12:04:15.
Hope that helps, because kads are now going at the 20 second mark instead of on the minute.
Today there have been some problems with it "Calling a refresh" though.
What I'm finding is that it won't function if all of the kads are fed. I've been on kad boards and when it's time for a main I turn on the auto feeder. Then I have to wait and do it again. I hope they ask for something ub soon