Bob,
Usually 3 year old comb is not that bad, usually brown comb. I usually cull the comb at the 5 year mark when it is black.
If you take the black comb and put it in the upper Supers, the queen will not lay in it. Then when the brood hatches, move it to the outer most frames, 1 or 10 and scratch the capped comb. The bees will probably move the honey to above the brood.
Jim