hot do you get these things off? i'm replacing the diff in my '68 baja and the factory manual is older than 68, so the axle tubes are different. i can't see the u-joint behind that metal cup/shield welded onto the tube, so i'm guessing i need to remove the axle bearing from the axle. i'm also guessing i need a puller or an elephant to do this. be gentle with me, its my 1st swingaxle teardown!