Cut 'em. I have a 52" Unifence on my Unisaw but I have room (sort of) to still be able to get around it. I cut full sheets of plywood infrequently and with the way it's set up and everything else that's in the way, I'm limited to more like 34" but knowing the full capacity is there is what matters to me. If I find myself in a situation where I absolutely cannot keep the full width, I will chop down the front rail as needed.