I still have un-good memories of using lug-centric aftermarket 'race' wheels with gumball tires on them and having much trouble changing them at the track. When you're by yourself using only a small floor jack in poor light, wrestling a 40+ lb wheel/tire into position on lug-centered wheels is no fun at all.
Poorly centered or not, two of my 4 Campys balance on the car with only 1/2 oz of weight. So unless corrosion has enlarged the hub bore on your wheels, Campys were at least intended to be hub-centric when new 40 yrs ago.
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