As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING START UP, THE AIRCRAFT COULD DEVELOP AND POWER ABOVE 80 TO 85 PERCENT POWER INPUTS. THE SERVO WAS INSTALLED AND REMOVED WITH A TOTAL OF 3.7 HRS IN OPERATION ON THIS AIRCRAFT. SERVO WAS SENT FOR REPAIR AND CONTAMINATION WAS REPORTED TO BE THE CAUSE OF LACK OF POWER. NO ISSUE WERE NOTED IN AIRCRAFT FUEL SYSTEM AND REPLACEMENT OF SERVO FIXED THE PROBLEM. (TC NR 20070827011)