another possible solution is remove the elevator halfs, use the elevators as plans/template and build new ones. use a slot cutter and make sure everything is exactly even and install the new parts. make sure the push rod throws are the same and the control horns provide equal leverage. the more time spent on set up will require less time spent triming or trying to compensate for an error made during set up.

or as CGr said... "if it ain't broke, don't fix it"