Circumferential Restraint is Restraining Radially

I'm experiencing a problem simulating a torsional restraintwhile allowing radial deflection in a cantilevered shaft with anoverhung load. I've selected the cylindrical surface restraint andonly selected a circumferential restraint. The radial directiondeflection results are one or two orders of magnitude smaller thanexpected. Any advice on this matter?\

Thanks.SolidworksSimulation