Unusual Fillet?

Hi,

I'm trying to model up a little design that I've had in my head for a few weeks, but I'm struggling to create the correct type of fillet in one area.

I've used the command 'fillet' and I get the result show below (where it seems to mirror the profile over too)...

http://farm9.staticflickr.com/8191/8120035580_c561af1f87_b.jpg

What I'd really like to achieve is something like this (see below)...

http://farm9.staticflickr.com/8183/8120035896_30e6dca04f_b.jpg

However as you can see from the marks I'm struggling to blend it all in together.

Am I going about this the wrong way, or should I attempt to model it differently?

I've attached a model (SW 2011) for anybody to download if they feel they can help,

Thanks,

Tom.

SolidworksParts And Features