web service issue

yes it has tcp under the health monitors for the pool. This pool is setup the same way as the pool that handles the HTTP traffic on port 80 on the same two servers with the exception of the session persistence. Port 80 has it and port 81 doesn't!! The port 80 traffic is working fine but the web service on port 81 isn't. The HTTP traffic and the port 81 traffic share the same virtual server 10.194.11.111