What was found
(CAN) DURING FLIGHT, THE PILOT NOTICED A SMALL DROP IN POWER AND RETURNED TO THE AIRPORT. SHORTLY BEFORE TOUCH DOWN THE ENGINE QUIT. ONCE CLEAR OF THE RUNWAY THE ENGINE WAS RESTARTED AND RAN OK. SUSPECTING CARBURETOR PROBLEM, THE CARBURATOR WAS REPLACED. THE CARBURETOR SENT FOR INVESTIGATION AND REPAIR.