[Owasp-modsecurity-core-rule-set] RBL Lookup File - ip.pag help!

[OSSEC junkie]

All:

I am using the RBL lookup and the ip.pag file is huge.  I thought this
would be recycled nightly but I guess not.  Any ideas or insight on
how to shrink would be great.  I could script the file to be deleted
nightly but just wanted to make sure there isn't something I need to
be doing but am not..

Thanks