As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING FLIGHT, ENGINE WOULD BARELY DEVELOP ENOUGH POWER TO MAINTAIN ALTITUDE. AFTER LANDING, IT WAS DISCOVERED THAT THE THROTTLE CONTROL CABLE FOR THE LT CARBURETOR WAS BENT JUST FORWARD OF THE INSTRUMENT PANEL, WHICH WOULD NOT ALLOW THE LT CARBURETOR TO MOVE TOWARDS "FULL THROTTLE" POSITION.