I have just recently converted a Mexican strat Body to suit an American Bridge, this meant me haveing to re-drill the holes to suit,some of the existing holes were in line or slightly off line so i needed to fill the holes whilst keeping the structure secure enough to mount a new bridge, after numerous ideas on how to do this i discouvered that good quality woodern kebab squeres fitted the existing holes perfectly along with a good quality wood glue to fix permanatly i have had no problems since.
Good Luck
Gary, May 2010