As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FUEL FLOW FLUCTUATES IN-FLIGHT AND THE ENGINE WAS ROUGH RUNNING AT ALTITUDE, AT LOW ALTITUDE THE ENGINE WAS SMOOTH IN OPERATION. OPERATION CHECK OF ENGINE ON THE GROUND FOUND THE FUEL FLOW DIVIDER WOULD FLUCTUATE. REMOVED FLOW DIVIDER AND INSTALLED A NEW OVERHAULED ASSEMBLY. GROUND OPERATION OF ENGINE CHECKED NORMAL.