Few Simple Questions

As far as dremmeling off the remainder of the tin strips, do you just use the sanding attachment or something tougher. I just don't want to damage the cell so I am not sure how much abuse they can take.

If I run around the neighborhood will the bowties handle that or will the concrete destroy them pretty quickly. I see you also have a masher tire (RDLogics) and wheel combo as well, would that still be lighter and handle the concrete better?

Final question this time around, it seems that since there is not an EPA on the stock radio, my steering sometimes gets stuck turned in one direction. I think it is because the servo is trying to turn more than it should, and the servo saver flexes just enough to kind of get stuck one way. Have you heard of this and is there something I can do? Should I have bought a stronger servo than the 625MG?

Thanks, and sorry for all the questions.
Chris