Munchkin.js - Disable default clickLink and visitWebPage, and use only custom ones

Hello,

In my code, I have:

Munchkin.init("xxx-xxx-xxx");

This alone seems to record visitsWebPage and clickLinks events.

I also have a custom call that adds more data:
mktoMunchkinFunction('visitWebPage', { url: document.URL + ' | Tag: ' + myTag });

Unfortunately, this doesn't "take over" the standard event, so I end up with two records in the Activity list for the same event.

Is there a way to disable the default behavior, and only use my custom code, so I don't have duplicates?

Thanks!
Peppe