Axles will not go in

Changing 391 pig to 323.Both are 741 housings.Has green bearings.Bought 741 case with
323 gears.Put pig in axles like about 1/4 of inch from going in .Seems like axle race is tilted out at the bottom more like they are in at an angle.The guy supposedly removed what ever it is in the pig that allows the axles to go in with green bearings.Bought it from a guy in Springfield Ohio named Greg that does a lot of these.Been trying to reach him for 2 days with no luck. Any ideas guys
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