The wheel bolts were real tight coming out and I could tell the threaded holes in the hubs needed cleaning. I didn't have an M14x1.5 tap or thread chaser so I cut some grooves in an old CV bolt. I had to install the brakes to do this otherwise the hub would just spin from the resistance. I also wire brushed and brake cleaned all the wheel bolts. Chasing the holes and cleaning each bolt took a while but when I installed the wheels it felt like new parts going together. It was definitely worth it!