Yes, you will be pounding on what I have called the spacer in my earlier posts. You will see the rivet heads start to deform if you look down the axle housing with a light. Also, the spacer will no longer wobble in the hole, which means you are expanding the rivet like it is supposed too. You will want to find a pipe that barely fits into the axle housing and you may want to wedge it tight with a wood shim. I wish I had taken pictures of this because there are a lot of trucks with this arrangement. Both my 37 and 42 are the same, but my 51 has different engineering to allow the axle to rotate the few degrees required. Good luck and feel free to PM me.
Kent
