My biggest reason that I want disc brakes is just the fact that they will stop me better and the biggest one is that when I put my new rims on my Gremlin, they dont lay perfectly flat against the drum. It seems to cause a slight wobble. They have what looks like a small weight on them. Like you use to balance a tire and it sticks out just enuff to not let my rims set flat. The factory rims set just outside it and it never bothered them, but my new ones wont. Can I grind that weight off or will it cause the drum to be out of balance? Tnx, Rod