Mold Design for a Pulley

Hi,

I've been playing with this mold design for a pulley and I'm having trouble with the shut off surfacing. SW did not recognize one of the surfaces and so I tried to make it myself but it's still claiming that the mold is not separable.  I've attached my work thus far.  Anyone have an idea?

Thanks,

Jason

SolidworksPlastics And Mold Design