OK...I'm stopping. Apparently the pfBlocker VIP and Web Server Interface ports were "sticking" and after several changes and Force Updates I got the DNSBL Webserver ports to change to 80 and 443 on localhost and set the VIP from 10.10.10.1 to 192.168.254.254. Everything seems to be working... NTP with localhost and not WAN selected syncs, Avahi is happy (that was a red herring), and pfBlocker is working.
It all seems to come down to, for some reason that I don't know, on this firewall NTP binds to the VIP because it is lower, where as on the SG-5100 NTP ignores the VIP even though it is also lower.
Thank you for your patience and all of the assistance.
Edit: I figured out why the SG-5100 works... It has a VPN server at 10.3.x.x, BELOW the DNSBL VIP of 10.10.10.1. Whereas the VP2410 VPN is at 10.42.x.x, ABOVE the DNSBL IP. This was the difference all along and it is the VPN IP that NTP is now syncing to on both systems.