I´m trying to replace a rear brake plate on a 2008 Streetmate R. I purchased a 2011 brake plate off of ebay and found that the hole was too small for it to slide on. My question is, is there a difference in the sizes of these parts? Is the rear exle of a 2011 different than the rear axle of a 2008? My two choices are to get an axle that fits or to drill out the hole so it fits. The part seems identical to the broken part except for the size of the hole.