That pin is tricky to remove, and the 'repair' Honda listed for it after removal is to tap the hole with a 2.5mm tap and use a tapered-tip screw in the hole afterward, glued into place. Most of the racks had a little cover there with a screw inside and a seal or Cerrobend over the top of it to hold it in place, because the screw is not tight (otherwise the shaft won't turn). On ones like yours I have just dunked the whole ting into a bucket of gas for an hour and then hosed it off real good to clean it, then detailed it.