That's all normal guys, mine was the same way.
Eventually, after you change things around,
adding/deleting even more, you're free memory
will be used up and the Pronto will purge it's
free mem.

The Pronto, saves all unused/deleted templates/
buttons/macros/and labels so they can be undeleted
later.

As far as whats been posted on this forum, the
software will allow memory management, where
all unused data can be deleted, clearing up tons
of mem.