It seems Begin/EndInit was for this purpose but does not work the first time
the control is dropped on the form (Which it should). My object is a
component that sits on the form so can't use the form load as I may not be
the one writing the form, someone may just drop my component on their form.  
I need to see after all properties are set if there are any
properties/components. that are no longer relevant that I can clean up.  I
keep references in the properties that match up to names of other components
in the component list.  I remove unreferenced components I add once I can
confirm they are no longer needed.  I could do this as the user edits things
but that could be time consuming compared to on designer load the user would
hardly even notice.