Soliloquy bad for HT?

I just bought a demo Soliloquy C3 center to use with my 5.3 mains. I went with Soliloquy because I think they're great for music. I love the 5.3s. But the C3 center just does not seem to match right, which is odd since it uses the exact same drivers, same box (although shortened a little), etc.

Scenes seem to pan ok, but voice just does not sound the same as the 5.3, IMO. I don't even think it's close.

Has anyone else had any experience with Soliloquy in HT? Maybe I don't have it set up just right.