SpringBoot multiple @Configuration and SOAP clients

I have tried to follow this simple tutorial http://ift.tt/13gMa2d, and it works.

I then try to connect to another SOAP service, with an additional @Configuration and client-class extending WebServiceGatewaySupport. It seems that both client-classes then use the same @Configuration-class, making the one I added first failing (unknown jaxb-context etc.). How can I ensure that the client-classes use the correct @Configuration-class?