HCL Sametime Forum : Clustering v9 Meetings with standalone WAS HTTP Proxy

Has anybody got experience with clustering Sametime Meetings in WAS with a standalone WAS HTTP Proxy? I've followed the guides for doing this like this one http://www-01.ibm.com/support/knowledgecenter/SSKTXQ_9.0.0/admin/config/config_meet_clus_collection.dita?lang=en and the 8.5.1 Redbook http://www-10.lotus.com/ldd/stwiki.nsf/xpDocViewer.xsp?lookupName=IBM+Redbooks%3A+Sametime+8.5+Enterprise+Scale+Deployment#action=openDocument&res_title=8.5.1_Adding_a_stand-alone_WebSphere_proxy_server_to_the_cluster&content=pdcontent but its not working 100%. I get random problems with attending meetings and have had to shut down the Node2 Meetings Server.

The thing that all the guides omit is to tell you how to do the DNS / Virtual Hosts / Host Name Aliasing for each of the servers and what URL the users should connect to to attend meetings and use the web proxy? I've found I have to use a hosts file on the primary node to fool the server into thinking the meetings and ST proxy server addresses are on the primary, rather than pointing to the WAS Proxy as they actually are in DNS, even though they are running on the Primary Node otherwise the servers won't start as the address for the servers in DNS is not bound to the local NIC.

We have this setup:
Primary Node: server002.company.com : 10.0.0.1
DNS Aliases: stadvanced.company.com - Port 80
Servers: SSC (server002.company.com), Meetings (meetings.company.com), ST Proxy (webchat.company.com), Advanced (stadvanced.company.com)
Local Hosts File entries for meetings.company.com and webchat.company.com to 10.0.0.1

Secondary Node: server003.company.com : 10.0.0.2
DNS Aliases: stadvanced2.company.com; meetings2.company.com; webchat2.company.com
Servers: Meetings2 (meetings2.company.com)

WAS Proxy Node: server004.company.com : 10.0.0.3
DNS Aliases: meetings.company.com; webmeetings.company.com, webchat.company.com
Servers: WAS Proxy (installed as webmeetings.company.com which can’t be used to attend a meeting)

Anybody done this successfully and can point me to where I've gone wrong? I have a PMR open but we're not getting very far.