[Kyle Love]

Just to bring up a couple of other possible issues...

Are the bearings installed properly (with flanges and such extremely level and tightly in place)?

Are you using a cantilevered or secured method for the wheel?

I would guess that if you could have a bearing or some other type of "reciever" for the end of the shaft, you may take some of the wiggle out of it. I do agree with some posts above that I doubt these wheels are really meant to spin as fast as many teams are spinning them. More then likely, that is the main issue, but I wanted to just bring up a couple of other possible issues.