Original Ignition Switch going bad, the wafers in the tumbler are worn, new switch is $700, looking for alternative, as I understand it, for the age of the aircraft (1966) it's form, fit and function and a field approval 337 to use the following switch, can anyone tell me if they currently use this switch (with the start position) ACS Keyed Ignition Switch With Start Position A-510-2 FAA-PMA https://www.aircraftspruce.com/catalog/elpages/igswitches.php Aircraft configured with SureFly on the lef