Use some 600 grit emery paper on the backside of the safety, and slightly round off any of the sharp edges. If you feel brave, use a Dremel with a felt bob and some jewellers' rouger or Flitz metal polish. This should prevent a lot of the future wear to the frame beneath the safety.
[This message has been edited by shane45-1911 (edited 10-23-2001).]
[This message has been edited by shane45-1911 (edited 10-23-2001).]