I was able to use a 4 inch side grinder at an angle to grind down my hubs about 1/8 inch, enough to exactly match the 13 inch metro wheels. I had to give the hub a spin before I started grinding and press just enough to keep the hub spinning with the grinder, this keeps the ground down part even all the way around. I just kept trying the wheel fit until it was perfect. It didnt take long, about 5-10 minutes each. I had to be careful not to nick the lug bolts but was able to angle the grinder just right to grind flat and even without touching the bolts. Just make sure that you spin the hub and keep it spinning with the grinder while you grind so you dont get flat spots and watch so you keep the ground part flat! tom
