I just had Michelin Power Pures SC put on my Grom and the motorcycle shop could not balance the wheels because the axle/spindle hole was too small. I called two other shops and went to Cycle Gear and they could not balance the wheels either because of the same reason. Do these wheels need to be balanced? There were no weights on the wheels from the factory. Has anyone ever had their wheels balanced? I did a quick ride around with the new tires up to 50 mph and it seems to be ok.