The shank will reduce in diameter when swaged. The spec is in AC43.13-1B page 7-31 e.g. for 1/8 cable the shank diameter after swaging is 0.219 and before swaging is 0.250.
Is there a big discrepancy between the part you ordered and the existing ball?
Yes way different but I just got off the phone with tech and he found the dwg and it called out those as the part number so off to get them done tomorrow. Thanks