The hubs came about two hours ago. They don't go on as easy as you would think. I struggled to get the bolts in for quite a while until I realized that I was going to have to ream the holes just a bit. I think that the spacer plate has it's holes located correctly, but the hubs were not quite right. I was able to put two bolts on then use a 1/2" drill to perform a little field expedience on them. After that, the bolts were just tight instead of impossible to install. I will be contacting Mile Marker about their quality control for sure. If they are going to make the holes snug on the bolts, they need to be in the right spots!
The upside is the hubs are on and they work as they should.