Seems to me that if the arbor hole is drilled to the right depth then the only thing that will really wear is the wedge. Maybe a nominal amount of wear to the edges of the wedge slot. I cant see driving the wedge in deeper changing cylinder gap. Now on a Uberti with the deep arbor hole it will change the gap. I don't know the setup on an original Colt but seems to me they would have the arbor hole drilled to the correct depth. I mean Sam Colt designed the thing, he oughta have known.