Win 2008 DFSR Static Port Firewall Query

Hi,

I'm adding a Win 2008 fileserver and want to add it to the existing W2003 R2
servers hosting dfs shares with replication.

Trying to add 1 test share at present.

We use static port 49154 for DFSR comms. I can set the service to use the
port and the W2008 logs show this is in use. All DFS management tools work
from both ends (old 2003 and new 2008) but the W2003 box shows DFSR 5002
errors with 1753 'no more endpoints' trying to initialise the new replication
group

I've attempted disabling the standard W2008 'DFS Replication (RPC-In)' rule
which as a default can't be edited then adding a new one so the port can be
specified for the dfsr service - with no success.

The firewall log shows no dropped connections..

What exactly needs to be changed/added on the firewall?

TIA, PC