Need help creating a radius on a part..

Hello everyone, I'm trying to create a radius on a part that contains 2 lofted cuts but for some reason is not working for me. I used the fillet feature and it gives me a very small radius but not close to what I need. Below is a sample picture of the radius I need to accomplish. The black arrow in the picture shows the radius I'm looking for. Also attached is the SW file (2013). I'd really appreciate anyone that could give me a clue on how to do this.

Thanks very much in advance!!!

George

SolidworksParts And Features