When fitting a Belfast sink undermounted - I know you normally allow a 10mm overlap of worktop over the edge of the Belfast bowl at the back and sides, but how do you normally treat the front face? Should that come flush with the front edge of the worktop? or should the sink protrude beyond the front edge of the worktop by half the width of the sink lip? or indeed step back from the front edge of the worktop by half the width of the sink lip? I am getting conflicting advice on this.....