I've been looking at replacing my banged up front rim on the Adv 640 and found a 525 complete wheel for sale. The hub part numbers are different. I'm wondering if the difference is that the 640 hub can mount dual rotors. The forks are the same, the axles too. Has anyone tried this? I actually own a 525 and can try the swap but its stored far away right now. Thought I'd ask here first. Thanks.