2015 Coachman 32 ' driveshaft vibration ( help)

I had a 2005 32 foot Southwind with a bad vibration. I marked all the joints/splines and carriers, removed it and took it to a shop. He started spinning different sections and then together and figured out that I was actually a lottery winner and hadn't realized it. Out of all the millions of splined yokes that are made each year I somehow got one that was not concentric. The center of the spline bore was not in the center of the u-joint yoke. What's the odds.