As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN)INSTALLED NEWLY OVERHAULED FCU. HAD TO ADJUST MAX FUEL TWICE AT 1/2 CW TURN EACH TIME. 5 MONTHS LATER, ADJUSTED ANOTHER 30 POUNDS PER HOUR. ENGINE WAS NOW UNABLE TO GO BELOW 95 PERCENT, REPLACED FCU. SUBMITTER SUGGESTS THAT THE FCUS ARE BEING RECEIVED FROM MANUFACTURER INDEXED TO THE LOW SIDE.