I think the custom does not show up because .NET hides that option. You have to set a custom tool strip renderer and it automatically sets that property to custom. Most likely, when you changed it, it set a property within the .designer.cs file for the status strip. If you remove that line of code that it generated, you should be good to go.
Great!!! Thanks, I was sure that you know how to solve it
I have a far related question... (it's a .net question about properties...) on post http://forum.strataframe.net/FindPost11402.aspx
Thanks Again SF Team!