I have seen these rim holes fixed by welding them to build the metal up then redrill the hole most small machine shops could do this in one or all 5 of the holes
So previously to my owning them the rim was over-tightened due to the left hand thread. The rim now has the nut opening larger than it should be. I thought at one time I found a page showing someones repair for this but can no longer find it. Does anyone know of a website showing how to repair this type of problem?