[Twisted-Python] pb.Broker subclass question

[David Pratt]

Hi. I'm interested in subclassing Broker to extend it. I've subclassed 
the PBServerFactory and PBClientFactory. The server starts with the new 
protocol class but the client is unable to communicate. I believe the 
client is not using the correct protocol since it gets it from Broker to 
start. Can someone provide some advice on a way to subclassing the 
client to have it use a subclassed Broker protocol. Many thanks

Regards,
David