I have an 07 wr450 and I bent my back rim up pretty bad a few weeks ago. I found a set of yz450 wheels that are off of an 04(i think) and the rotor doesn't seem to fit right in the caliper. ***? Did I just put my wheel on crooked, are the spacers not symetrical(used my wr ones) or do I need to shim the rotor? I would really like to make this rear wheel work so that when I get the stocker fixed I have 2 sets of wheels. That would be really convenient. I would like to know though if this is a lost cause or anything, before I really get into it and it melts my cranium. Thanks.