Un-universal Spacers
 

I have recently put differnet wheels and tires on my MC. I needed spacers to keep the tire from rubbing with the springs. I got some universial 5 lug spacers. I installed them, however since they are universal when I place them over the lugs, they sag. So the top will be flush with the hub, but the bottom will be about 1/4" away from the hub. This is fine for under 50MPH, after that the car starts bumping due to the out of balance tires.

My question is this. How can I install the universial spacers PERFECTLY?
Or where can i get ones that will not have this problem?

Thanks!