Hi Glenn,
Good to hear that you have gotten 9 of the 10 bells working, so you are on the right track. My only suggestion then would be to make sure that all of the parameters of your 1-9 events are the same as your 10th event. The most common mistake is that the MCS-350 uses a 24-hour time, so events for the afternoon must be entered in as 13, 14, 15, 16, etc... for the hours. Make sure that the 10th event has zones selected, days of the week selected and a tone number selected, and is on one of the schedules. That's really all there is to it.