Upper BJ tightness ('moog)

Do the ball joints spin in the control arm, or, just thread in easier than you like? Will they hold the torque spec? If neither new ball joint will hold torque, I'd just tack weld them too, like the others have mentioned. I've dealt with hundreds of control arm over the years and haven't seen a problem with ones tack welded.....usually needed because of the joint being pressed in by the ignorant.