The way you're using the JustMock API is exactly correct. Mocking the return value of "new" expressions was a feature implemented in JustMock 2014 Q3. In fact, using the "Make object ID" feature of the Visual Studio debugger, you should be able to see that the mockSvc and the result of the "new" call are exactly the same instance.
Can you send me a repro project or a snippet with all the relevant code that demonstrates the issue?
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