The one I had was a little wooden block with a body file looking piece on it. They are ok, but you can do damage with it too.

If the paint is good and dry it shouldn't rub off or peal away from the base.

If you have a steady hand you can use a razor blade standing up on end at 90* to the finish, lightly scrape it along the length of the run back and forth. Just slowly take the high spot off till it is flush with the surounding aera. Keep in mind the high side above the run may not have as much thickness and may be easier to go through. If you didn't leave any cuts or skip marks you could buff the rest out, but a light sanding may be needed first with 1200.

Any pics of how bad they are?