I don't know about them rubbing on axle since it turns with the hub but
I use a block of wood and a hammer place the wood block on the rib and tap gently with the hammer.
I also have used a pipe coupling that fit over the end and rested on the rib but like you I don't have a clue
where that is somewhere in the bowels of my rear garage.
or you could just smack them on with a 2X4 bend in the ends that way the make a wavy pattern when driving down the road.........
1 more day yea!
I went to Christmas lunch yesterday, brother and his wife, nephew and Niece , 3 grandNieces & their husbands, 10 greatgrandNieces 3 greatgrandnephews. my brother started a family at 17 and the Tradition carries on........
pete