i just picked up a set of excel supermoto rims and tires with excel pro series hubs. as far as I know they came off a rmz450. I want to put these on my 2003 wr450. Does anybody know what I need to do to make them fit? the stock axle is too small for the bearings in the hubs and all the things i have read online is that there is only one size bearing for these hubs. would the right spacers make up for this or what?