Tag edit help

Hello, I have a bunch of my tags that are being appended with numbers. This is mentioned in your FAQ, but I would like further clarification before messing with my database:

Why do my locations get a “-1” at the end?

When a new location is added, the URL might get a “-1” appended. For example
mysite.com/location/greece-1/
This happens because WP does not allow duplicate slugs, and there already is something else using the slug greece.
This is most likely to be a tag, but can also be something else.
The solution is to search the database for the slug greece and change it to greece-1.
Then search for greece-1 and replace all results (except the one you just changed) with greece.

Can you provide more details? This is the structure I am trying to achieve:

Place
–City 1
–City 2
–City 3

Event
–City 1
–City 2
–City 3 (etc.)

This is what WPGeo is creating

Place
–City 1
–City 2
–City 3

Event
–City 1-1
–City 2-1
–City 3-1

Please let me know if you need further clarification. Thank you.