As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DISTRIBUTOR GEAR TOOTH DAMAGE. SEVERAL GEAR TEETH BROKEN ON BOTH GEARS. NEW GEARS WERE FOUND TO BIND ON ROTOR PINION GEAR EVERY 90 DEGREES. NO ROTOR TO HOUSING INTERFERENCE INDICATED. VISUAL INSPECTION REVEALED NO CRACKS OTHER THAN ACCEPTABLE STRESS CRACK AT BEARING BORE IN BLOCK. GEAR AXLE BUSHINGS APPEAR SECURE, MAY BE MISALIGNED FROM WARPAGE OR MANUFACTURE DEFECT. SCREW THREAD INSERTS FOR CONTACT ASSY. PULL OUT BEFORE REACHING MINIMUM TORQUE. BLOCK HAS A 94 DATE CODE. REPLACED BLOCK, MAGNETO FUNCTIONS PROPERLY.