The attached script allows you to change the rscd port using nsh. The usage of the script is:
con1% ./change_port.nsh target1 9099
This can be used in Config Manager as well.
Once you have tried one machine, then change the /c/Windows/rsc/secure file to add an entry for that machine with that port, and then do an agentinfo, nexec netstat whatever.
Then change all machines (apart from the machine used to launch Config Manager!).
Finally change config manager, tidy up the secure file, and you should be all set!