Remote Profile WCF running on IIS 7 accepting TCP Connections

I have a single IIS Web application with several WCF services running under IIS that I wish to profile due to intermittent performance issues. I have a website with is a client of the WCF services using TCP to communuicate with them.

Using DotTrace, I am able to setup the connection from my work PC to the remote client without problem. When attempting to run the profile, it appears to deploy / configure the remote agent, but at which point I can no longer 

1) I have the Remote Agent running on the server as an Administrator

2) using net.tcp:// address, i can establish a connection with the RemoteAgent from dotTrace installed PC

3) It appears to some installation / registration of software

4) Website can no longer communicate with the WCF on IIS host. Reports; "

No connection could be made because the target machine actively refused it XXX.XXX.XXX.XXX:808"

 5) Close the Remote Agent application and restarting the NET.TCP Listener service fixes the issue.

Really need to know a solution for this, as the Tool was bought specifically to monitor these WCF Services on our Release environment to diagnose some intermittent performance issues.

Any advice appreciated.

Cheers

Darcy