This forum is only for reproducible bugs with csf and lfd (i.e. not iptables problems, lack of understanding how to use a feature, etc). Posts must be accompanied with full technical details of the problem and how it can be recreated. Any posts not adhering to this, or not considered bugs, will be moved to the General Discussion (csf) forum.
Did you make sure that you restarted csf and lfd after making any config changes? If so, are you seeing more than 7 hits within the 300 second interval? If so, paste the iptables log section showing these and I'll see if I can recreate the problem.