[HECnet] HECnet GRE Tunnels...

I have just finished doing a bit of network cleanup on my ASA and 1841 and noticed that a number of the HECnet GRE tunnels seems to be down or possibly misconfigured. I know that my IP address changed a while back as part of the transition to Australia's National Broadband Network (NBN) and my router can now be found at 110.141.227.104. I am pretty sure that Brian sent out an update, but I'm not sure how well it was applied. Since changing IP addresses I've only been able to establish a tunnel with?50.131.218.138 (area 42).? However, when I attempt to ping the other end I am unable to reach 42.1023. After looking at my firewall logs I noticed that someone at?81.135.164.245 was attempting to establish a GRE tunnel.? After looking at the existing configuration I noticed that it was a similar address to what had been last configured for area 22.? I made the change and now I can establish a link to area 22 and I can successfully ping 22.1023. However, that is were it ends.? I have tunnels configured for area 59, 23, 61, 9 and 52, but I have no connection to the other end.? Worse, I have no connection to the HECnet as a larger entity. Is anyone else other than myself and Mark Darvill still using the tunnels?? If there is a lack of interest in the maintenance, I would be happy to take it over and start running the bridge here too.