Please descirbe what you lost from the mast. The top of the Capri mast is open, then there's a sheave with a bolt thru it for the main halyard. That's about it at the top unless you have added a windex. Parts can always be purchased from Catalina.
The top of my mast is open as you say. I also have a windex with it. Have no plans to use the windex, but do wish to install the Hobbie ball at top. Being a new sailor, think I will need all the help possible.