DFS replication issue

Have a 3 sites with 4 domain controllers all 2008 Servers, Domain is running at 2008 domain functional level. 2 DC are at the main site (fsmo split between them)one at each regional site all global catalogs. AD is setup as per best practice and all seems to be functioning well. If i run the following commands i get no errors as per below

repadmin /showrepl shows all replications for all zones to all domain controllers successful
repadmin /showsummary shows all successes no failures
dcdiag passess all tests

However

a verbose dcdiag has the following error for all domain controllers

            [1] Problem: Missing Expected Value

             Base Object: CN=BENDGC,OU=Domain Controllers,DC=ourdomain,DC=local

             Base Object Description: "DC Account Object"

             Value Object Attribute Name: msDFSR-ComputerReferenceBL

             Value Object Description: "SYSVOL FRS Member Object"

             Recommended Action: See Knowledge Base Article: Q312862

I have looked at Q312862 but this article is old and references windows 2000 and 2003.

This led me to look at DFS which we use to replicate a single directory between 2 sites

DFS Health report showed the following

DFS Replication cannot replicate with partner BENFILE1 due to a communication error. The DFS Replication service used partner DNS name benfile1.ourdomain.local, IP address xxx.xxx.xxx.xxx, and WINS address benfile1 but failed with error ID: 1753 (There are no more endpoints available from the endpoint mapper.). Event ID: 5002

sysvol replication is OK


any suggestions out there

One thing i must mention is we did have an issue where DFS was not accessible at a the remote site. This was fixed by rebooting the domain controller at that site. Users can access the dfs shares OK it just the single directory that replicates is not replicating.