So there's no play? Neither wheel wiggles, or feels loose? You're not trying to actually turn the wheel, just see if it wiggles back and forth a little bit without moving the other wheel. With the key in the "acc." position, you should be able to move the tire from lock to lock smoothly. It should take some effort, but shouldn't be so hard that you can barely move it. I have a rebuilt rack in mine, and can move it smoothly from lock to lock with very little effort.