Issues with ZoneDoctor...

As he said, Event editing is best done and learned directly. Zonedoctor is a cool program but event editing is just to open ended for a program to handle.

Example, there is more than enough space to add the event you mentioned, without deleting anything yet zonedoctor can't understand how to get to it.

Use it as a reference and as a tool to learn, but you'll only be able to do the really fun stuff if you get hands on directly.