Continental Motors owns Bendix Magnetos. You should have the mags serviced/overhauled every 500 hours. There is no AD just a service bulletin. I suggest that you send them to Magneto ER, they do a fine job on service.
Magneto ER
575 N. Taylor Rd.
Bald Knob
AR, 72010
Phone: 501-724-2225
E-mail:
magdoc@centurylink.net