Front hub not centered in dropouts Is there an adjustment which affects the amount of axle on each side of a front hub?

I have one wheel set, in which the front wheel does not center in the fork.  If I switch to another front wheel, that one does center properly in the fork. (Closing the quick release is difficult, one side of the fork gets pulled in). Therefore, I know the problem is not with the fork, but with this first wheel.  I suspect that something is wrong with the hub, and has been that way for the life of the wheel.

Is there an adjustment I can make to attempt to get the wheel to be properly centered in the fork?
I will answer my own question, I think I have figured it out.

The Shimano skewer is slightly thicker diameter than the skewer which originally came with the hub. (However, the skewer which came with the hub is poor quality and doesn't close very well.)  I think that the end cap is slightly too small diameter to let the Shimano skewer all the way through the axle and move freely.

I have a Bontrager skewer from another wheel set which seems to work.  Looking at the two skewers side by side, I can see where the Shimano gets larger diameter closer to the threads than the Bontrager skewer.

The hubs in question are branded "Pure" and the wheel set came from Bicycle Wheel Warehouse. Note that a Shimano skewer worked fine in the rear hub.

Not sure what I will do, as the Shimano skewers have the nicest cams. 

If you see the comments, I was able to fix this problem by purchasing a new Shimano Ultegra skewer.  The threading was different on the Ultegra model, and it is compatible with these hubs.