What was found
(CAN) ENGINE EXPERIENCED LOSS OF POWER AND SURGING IN FLIGHT. TROUBLESHOOTING REVEALED CARBURETOR PROBLEMS, OVERHAULED CARBURETOR INSTALLED AND ENGINE OPERATION RETURNED TO NORMAL. FAULTY CARBURETOR DISASSEMBLED AND FLOAT AND NEEDLE ASSEMBLY WAS FOUND JAMMED AND NEEDLE SEAT WAS FOUND UNSCREWED AND NEARLY UNSEATED FROM SEAT BOSS IN BOWL CASTING. THE NEEDLE SEAT LOCKING DEVICE DID NOT PREVENT THE SEAT FROM BACKING OUT EVEN THOUGH IT WAS SECURE IN THE BOWL. THE TEETH OF THE DEVICE APPEARED WORN